Crazy hormones after weaning?

It’s been a couple months since I completely weaned my son. I feel like my hormones are still out of wack. I gained a few pounds right after that I can’t seem to get rid of (even though I’ve cut my food by 1/3 & started exercising more). My acne has gotten worse and nothing seems to help. Is this normal right after weaning? How long are your hormones crazy? I didn’t think there would be this much of an impact, since my period came back 4 months postpartum and my son is now 1 1/2 years.