Hello , I had unprotected 4 months ago. I had it just 1 day before my period which usually comes on the 10th of each month. My boyfriend ejaculated outside my vagina, but I was worried so i decided to take morning after pill to prevent pregnancy. my period which i was expecting was delayed for 5 days and came on the 15th which lasted for 11 days with heavy bleeding and back and abdomen sever pain which wasn't as normal as it used to. Next month my period came but delayed more and I had it on the 23rd with the same situation but for 8 days only. the Next month it came on the 25th for 7 days. for the March I didn't came yet and now we are on the 6th of April. I'm having this sever lower back pain but without any bleeding. counld I be a pregnant? or what is wrong with me?