Period cramps or something else???

Mo

I am almost 5 months pp and ebf. I have been having stomach pains for almost 3 weeks now. It gets worse at night or when I lay down/pressure is applied. I feel bloated, hungier than usual and I am little constipated. I did have gallbladder issues during my pregnancy. I havent had my period back yet, so could this be a prelude to it or is this something else?