Hello I'm trying to conceived ...i had a question my last period was on 1/28/13 i had sex on the 5 till the 12 of february 2013 I also ovulated on February 11 ...I been feling really tired with abdominal pain and backache I use the bathroom constantly and my period is 9 days away which is on 2/25/13 ...Could I been pregnant or is premenstrual symptoms