I am a mother of three children, age 27and the last time I had sex was dec, 26, 2016 (it was protected sex, but I don't know if condom could have possibly broke). I spotted in January for a 1 day and never seen any period after that; inseated I started having terrible lower abdomen few times a month which have now stopped too. I did 2 urine pregnancy tests at home in March and 1 urine at public health and they were all negative. I did not have any signs or pregnancy until today may 10th 2017 I felt soar nipples and some sort of movements when I lay down. My stomach has not hardened yet though. What could be wrong? Please keep in mind that I took out my copper IUD in September 2016. Any help will be greatly appreciated.