Fan Question

I got my mirena iud out June 13th. I had some spotting after then got my period July 3rd for a week. My husband and I are trying for another baby and hoping we get a bfp soon. According to my period tracker, I was fertile all week. I have all of a sudden been cramping so so so bad.. Anyone have this happen? I'm supposed to start in 2 weeks, but could it be the implantation process? maternity wears for wedding at affordable price