I had mirena implanted Mid July of 2017 the first two months i would check for the strings however after the third i could no longer feel them and i just assumed they “curled” up as i read they eventually would. I have been sexually active with my partner since September, we don’t use condoms but he has never ejaculated inside. I have had irregular periods with mirena since getting it. However last night i had intercourse and my partner ejaculated in me I did notice for the first time during intercourse it did hurt a little but wasn’t too much. After i used the bathroom i bled a little but not a lot. I read that it could be due to a thin uterus lining. However I’m not sure if I’m protected or not due to all of these factors. I would go to a doctor but i recently moved states and have no primary doctor. My question is would it be okay to take Plan B contraceptive even if i have mirena?