First trimester bodily changes

I’m only 10 weekish in my pregnancy and I’m really struggling a lot with the bodily changes…especially the breast tenderness and I’m always hungry and eating that I already gained 3kg in the last month. 🥺 really wake up every 2 hours just to eat something n it’s really so frustrating n I can’t sleep. N my skin itch and sometimes I get edema but I understand most people only get edema towards their last trimester. Don’t know what is happening n it’s freaking me out. Anyone out there can advice please?