Feeling a little concerned

So I had my Daughter July of 2017 and was diagnosed with PPD January of this year when she was 6 months old. I have been struggling like crazy and didn’t want to admit that was going on until I was admitted into inpatient therapy. Well fast forward to now I am 5 months pregnant and I feel concerned because I’m not happy. I feel joy when my Son moves around inside me or when I can see him move, all the common moments you should feel joy. Except the rest of the pregnancy. I feel little to no emotion about him, it’s like I don’t even think I’m pregnant but I know I’m pregnant. I know I’ll have a little one in a few months but nothing has really clicked. I thought I would be happy when I saw him on the ultrasound and I did when he was 9weeks but during our 20 week scan I felt nothing. When I look at the pictures, nothing. The thought of him I get no emotions. Could this be my PPD restarting and trying to overtake my joy for my son? My OB who I love dearly told me to call her if I feel at weird emotions that I can’t explain. She explained that during pregnancy while a mother is suffering from PPD it can either decline the symptoms or can escalate them at a moments notice. I just don’t want to bother her or take up her time if this isn’t something to worry about. Also I do know is if I bring it up to her in office she’s most likely going to ask why I didn’t say something sooner and try to comfort me like she did when I finally had the confidence to tell her these emotions after having my daughter....

*** Back story***

I do want to add the father of my children are not the same. With my daughter I was married to her father and still legally am. He was extremely supportive of the whole pregnancy and we wanted a family so much! We had lost 2 before being blessed with our rainbow. But when I was 22 weeks something changed and he got violent and tried to kill me the baby and himself. My dumbass stayed with him until January of 2018 when he walked out and was having an affair with a co-worker. When he was caught he threatened to kill me and described in detail how over the phone and I called the police had a victims protective order placed and filed of divorce. And it has been an extremely rocky road since.

Now the father of my Son is amazing. We met right after my husband had walked out and been together since. He has literally seen me at my complete worst he was there for me when I was admitted into inpatient and started treatment, he never left my side. The only problem with him is he doesn’t seem too happy about the baby either. Also the baby was planned as in “if it happens it happens if not we will keep trying”... he was extremely evolved and still is with his son who is now 3yo and loves my daughter who is 1yo to pieces. He has been getting treatment for his PTSD the same amount of time I’ve been getting treatment for PPD. But he says he just doesn’t have emotions but loves the baby and is excited. He even named our baby as soon as he found out the gender. But other than that he’s not too enthusiastic...

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Could I just be reading everything wrong due to my own problems or is everything coming into play together to create an emotional block?

I do plan to tell my OB about this next week when I see her, but I just want to make sure it’s all relevant to each other and I’m not rambling on and confusing her. She has helped me so much in past and present that I don’t have a fear in telling her it’s just I have a fear that I don’t even understand it myself.