Weird symptoms

My body is feeling off lately. I am 8 months pp and exclusively breastfeed. I've had one period since having my son and I just got it last month. I feel like I'm about to get my next one but I just feel off. I'm very bloated and my uterus really hurts even just with movement and my boobs hurt like PMSing but that's rare for me. I also have had a crazy amount of fertile mucus, it's clear and stretchy and is constant through the day. Anyone know if this is just hormones or something else?