Maybe it’s the hormones

I will be 7 weeks pregnant tomorrow and my younger sister (16) went out to visit my grandparents. Well my mom asks me “oh do you miss her” granite she’s only been gone for a week but at the time she was gone for about 4 days I was like I mean ya but we don’t talk or hang out much when she’s here anyway so. She just said of course you don’t. Ok whatever I’ll brush it off my mom then FaceTimes her threw my phone which I don’t care at all about because she has an Android so I’m trying to talk to my sister and my mom suddenly goes can’t you just stop your like I child begging for attention. What the hell?! You ask me if I miss her and I try to talk to her and you call me a child makes no sense. I then FaceTime Emaly to tell her we heard the baby’s heartbeat (for me this is a huge thing after having a miscarriage as I’m sure it’s huge for every mama though to) all she says is “cool” I was honestly disappointed by the reaction when I told her I was pregnant she started crying and then when the heartbeat comes she’s like ya whatever I have to go. So we FaceTime her later on that day again and I ask to talk to grandma and I just ask my grandma if she heard that we saw the heartbeat and she’s like ya I did that’s it nothing else. So I hand the phone back to my mom kind of frustrated that nobody really cares. Then my sister asks my grandpa do you want to say hi to “my name” “No” that’s all he says I haven’t talked to him in about a month and we left things off on a good pint so I’m confused as to why he wouldn’t even want to talk to me .Fast forward to that night my sister asks me “oh show me the baby. I really hate people pulling up my shirt to show my stomach it’s just really uncomfortable for me. So my mom goes to pull up my shirt to show the bump which is actually bloat I know but it’s a bump to my sister. I stop her because honestly I’m still kind of pissed off that she can react like that about the heartbeat and then come say let me see the baby. My mom just says “why” I tell her if she reacts like that about the heartbeat why would she even want to talk to the baby. So she just ignores my comment and goes back to my sister. I know maybe not the best thing to say but everything has been boiling up. My sister is coming back home and I’m hoping things will change but I honestly just feel sad about everything and the way I’m treated. If you gotten this far thank you! And do you think I may be overreacting a bit or do I have a right to feel sad, mad, or whatever?