Well me & my boyfriend are both 20 . We had unprotected sex March 4 and he did ejactulate in me . We were ttc . I had gotten my period about 2 weeks before we had sex on Feb 17 and wasnt expecting my next one until about March 17 . But i guess it came earlier ? I ended up getting a normal flow period from march 10 - 14 , only i didnt get the normal symptoms that i always get when i start my period ,, such as cramps & extremely sore breasts & for some reason , as soon as i stuck a tampon in i got a sickening feeling in my stomach >.< So i ended up using a pad {which i hate -.-} But yeah , its been about a week since i got off my period, now on March 25 i started bleeding again ?? Only it's a lighter flow than an actual period & this time I am feeling a bit of cramping , extremely moody & i gained about 7 pounds ?? What could this be ? I can't be pregnant , can I ?