Bailing because your possibly preggers

Ebony Jay • I'm 27 and my boyfriend is 34, from mid Wales, two angel babies and one beautiful daughter, Elsie who will be 4 soon , expecting our next little miracle 01.10.2022
So tonight I was meant to go for a meal for my fiancé's mum's birthday. I was getting ready and all of a sudden my stomach starts hurting. Almost feels like it's burning on the inside and I feel like I need to throw up. Ran to the loo thinking I'm going to be sick. Nothing happened. Still really sore feeling in my stomach. Lying down in bed. Fiancé mum downstairs now and I can hear her bitching about me - saying things like she is always unwell. I don't know why I bother inviting n her etc because he has just said I'm not coming I'm not feeling well. Just came up to see me and was nice as pie to my face. Had sore boobs all day, had some cramps Last week. Been feeling sick. A couple of very faint positives. Want to be sure before I say to my fiancé or them that I'm pregnant. After two losses I don't want to get theirs and my hopes up until late af