No judgment please. 8 months pregnant and just want thoughts. If nothing nice to say just do not respond thank you

We have had issues.. since my son was born last year… he was always my prince and soulmate and always valued me and all I do. I guess having a baby triggered childhood trauma in him and he changed… he and my sister had an emotional affair. She is 14 months older than me and has been jealous of me and my life since the moment he came into it 6 years ago. He always had my back and hated how she was with me. She was jealous because her and her on and off bf one time fiancé have been together since 2013 and I am married and have now a baby boy born last March and now another on way in August. Well I guess she made it easy and he knew she needed attention as she doesn’t get it from her bf and they started texting inappropriately flirtatiously sending hearts etc from the moment my son was born in March until I put pieces together as she began acting and talking weird about my husband and how she felt my baby was acting more special with her than with me and if she put on her blue light glasses that she got specifically because they look like my everyday glasses she could confuse my baby to think she was the mother. Well I saw her phone as she stupidly told me her and my husband were texting while he was on business because I was “busy with my 2 month old” and I took it sneakily and saw a lot. Well I confronted him and he was hysterical crying and I was and he didn’t know why and still doesn’t know why I said last May swear you’ll never talk again and he swore. Well long story short I had a talk with her too and said she has been terrible to me through all my moments engagement wedding pregnancy and she said she will be better for next big moments like baptism and whenever I have another baby. Well I made her godmother for my dad because my mother begged me to because he had been delusional thinking we were bff since childhood along with rest of my family only my mom knew the truth even though my dad did but he was in denial. And long story short they continued this inappropriate relation and I had triggers all last year as I felt my husband was different and detached from me and criticized all I did or didn’t do with my son how I fed him how he hated me hanging laundry up and waiting a day or two to dry it and fold etc. even though the house is always spotless and food is always made and on table. And I take care of our son. Well I discovered it continued end of February. Meanwhile we found out pregnant in December. And told family on Christmas and sister was so cold and her bf too as they always get woe is me feel sad for us that we don’t have marriage and babies. And now I know why she was so cold because she loved her relation with my husband and it wasn’t fair etc. she came over the month before I found out and was laughing at the vows my husband wrote me hanging on the wall. Well I have gone to therapy and therapist thinks I need to try with husband as he has true issues from childhood that came back unfortunately when his son was born ( no father figure & not nice mother) and he was so loyal and loving for all our years together minus the year. Therapist said you created boundaries with your sister for years not telling her about your life being superficial and she caused you anxiety for so long everytime you would have to talk to her or see her. Her issues are self made and jealousy. I feel bad for my parents that their daughters her and I aren’t speaking but she still has back tracked and continued to lie when she already a few months ago put her foot in her mouth and I caught her in a lie she now is retracting that she knew I knew they were talking last year. I know it’s to keep her bf gf relationship in tact even though she isn’t happy with him clearly as none of this would have happened with her and my husband. She just doesn’t want to be alone so trying to lie to protect her relationship. . He said he remembers the year before son was born and she put a selfie of herself in his phone on Easter and the next month for her bday dinner I saw the photo she is next to her bf on one side then her then my husband then me at the end and there is a huge space between her and her bf and she is pressed so hard against my husband he said at that time he felt so weirded out by her her breast is literally pressed against him and every one who saw it after this all came out my mom therapist all agree wow that is so weird and bizarre. When she first met her now bf in 2013 I remember her saying ew his teeth and eyes and I am not attracted to him he is not cute at all and when I first saw my now husband in 2016 she said wow he is good looking and has nice teeth and eyes. So my husband and I are trying to work it out. We have another baby on way and therapist I have seen multiple agree that I should try to see if it works with him because he has true childhood issues and before last year never hurt me where she has self made jealousy issues and has hurt me and I have had to dim my happiness and light because of her and my parents and in turn I have enabled her to be rewarded for bad behavior towards me.