u/Few-Ad4137

Hi! I know the title is confusing, but its because im confused too.
Heres the deal : I am 22 years old (1.64cm) girl that her whole life used to be skinny. From my teen years till last year my weight was ranging between 44 and at best 50 kgs.
This year somehow i managed to gain 5 kgs without even realising i became 55 kgs.
It was good for me, i wanted to gain weight.
BUT i noticed i have a bit of belly now, which i DONT like and i dont want it to escalate. I do almost no activity as it used to be like before… is it because of age? Is it hormones? I have no idea what it is i just want you guys to help me : How do i get rid of my slight belly fat before it becomes a lot?? 🥲