period problem I took a birth control injection 4 months ago after that my period is kind of stop for 2 months and when I went to check for pregnancy test it was negative then after couple days I got dirty spotted blood and then after 1 month again same dirty blood in two month I don't hav intercourse now I have intercourse after that I am bleeding but clean pure blood but little bit only and I am trying to get pregnant I don't know what should I do should I need to check with doctor or can u suggest anything. please let me know.. thank u