I had my iud Mirena removed Dec 9th only had it for a year had a period for 3 days on the 11 of Dec and then 3 days of red light spotting on Xmas eve but have not had a period since I have sore and tender breast I have some light cramping here and there. I've taken some pregnancy test there all negative I have been very sexually active, is it to early to detect that I am pregnant or why haven't I had a period?