Is it okay to lose weight while pregnant?

I know it sounds ridiculous I know but hear me out.

Since I had my son in Dec 2018. I have eaten carelessly because of convenience. I’m pretty upset with myself but only I can fix it.

I just got a BFP almost 7mo postpartum.

I basically want to know if me getting back to my healthy eating habits and working out after work throughout my pregnancy would be okay even if I’d lose weight. I don’t plan to be extreme but enough to see and mainly feel results.

I was all baby my first pregnancy but I’m afraid I’m more out of shape now than I was the first time so I fear blowing up unhealthily.

Sounds silly to some, just trying to work on the best version of myself for me, my husband, and to set an example for my babies.

Thank you! God Bless 💙