Iv only been on birth control for a little while

July was my first month. I decided I didn’t like how it affected me so I decided to stop this month... I had my period November 28- December 1 and I did not start a new pack.... how should I be feeling? I have very little discharge and have been having some cramping... first it felt like period cramps but now it’s just a dull ache... me and my bf aren’t trying for a baby but we aren’t preventing it either... if it happens great if it doesn’t no worries either... just curious what the chances of pregnancy are and if not possible then is this normal to feel this achy and crampy?