My boys.. Lol

I hate being touched right now. Even if it's a simple hand on my arm.. I just want space constantly and I feel terrible because my daughter wants to cuddle all the time, my husband likes to cuddle all the time, and I literally feel like screaming when I'm being touched. What the heck?! So I have a three year old boy too. Recently he has been OBSESSED with my boobs. He is constantly wanting to grab them and touch them, and thinks it's funny to pinch my nipples. What is going on? Has anyone else had this happen all of the sudden with their child? My 1 year old son recently is constantly trying to sit on/lay on my belly.. I can tell he is uncomfortable (I'm 33 weeks so he has to lay all awkward lol)but he just lays down on top of it and gets mad when I try to change his position because it's SO uncomfortable for me. Any one else's kids doing stuff differently now that you're big and pregnant?