AITA for not letting family and friends touch my belly?

I (26f) am about 5 months pregnant and my belly is starting to become noticeably bigger. I am also the first pregnancy on my side of the family. My pregnancy hasn’t been the easiest weight wise so far and I’m currently struggling a lot with accepting the changes my body is going through. I barely let my bf (29m) see or touch me lately.

Since the announcement of the pregnancy my mum have had a tendency to just randomly rub my belly if we are together, this was even before anything could be seen. I’ve tried to tell her that I don’t appreciate her rubbing my belly without checking in with me first but she says she just wants to feel included in the whole experience. So I started pushing her hands away whenever she got near, this resulted in a lot of snide comments from her side but never a full on confrontation. The big problem is that now that I am noticeably pregnant she’s started sort of inviting people around her to also touch my belly. At family gatherings she’ll almost direct other peoples hands over on my belly while she talks about how exciting it all is. It doesn’t matter if it is close family and friends or if it is people I’ve literally never known, she’ll guide them to my belly.

Well, the confrontation happened and I told her that I’d like for her to stop doing it, even briefly touched on how my current body image isn’t the best, or I would start pushing other people away as well as making full on scenes no matter where we where. She called me unreasonable and selfish, that all she wanted was to show me of to people because her and others where excited about the pregnancy. That it wasn’t a big deal, that it’s something every expecting mother has to go through and not to react like they were groping me when they only rub my belly.

So am I unreasonable, AITA and do I just need to get over my body image issues so everyone can enjoy the pregnancy?