miscarriage

So I miscarried Feb 27th. By March 5th my levels were down to a 2. on March 22nd I had horrible pains in my pelvic area on the inside. My ovaries hurt so bad! and lots of creamy white cervical mucus. the next day 23rd my nipples were sore. next day 24th my nipples were sore and itchy. nursing my 10m old is pretty annoying. They itch so bad I could scratch them off! what could this be. this was my first miscarriage so Idk when I should start back or anything. We haven't been super careful esp between the 27th -5th cause I wasn't sure I was miscarrying. I was 99% sure though. I get really bad pains during and after sex since the 22nd. It is to the point I don't want to have sex.