pregnancy or mirena crash?

BFN. AF is 2 days late. I recently got off the mirena 5/3 and had what I thought was AF 5/5 to 5/9 just much heavier with slug size blood clots. per Glow I ovulated 5/22, hubby and I had intercourse 5/20. idk if the "pregnancy" symptoms I've been having are real or if part of the "mirena crash" anyone else go through this. I know I haven't been trying long but I also prior to birth control had irregular periods and my right fallopian tube is clamped from ectopic pregnancy February 2014. we got pregnant December 2014 had our rainbow baby august 2015. I just want another baby.