Please read!?

Hi, I think I ovulated and conceived sometime between May 22-June 1st,because I've already started feeling pregnancy symptoms. Because I was taking the pill, I decided to stop, and now experiencing bleeding since last nite. I'm not exactly sure if it's breakthrough bleeding or implanation bleeding. It was brown in color, and now heavier and red. Does anyone know whether or not breakthrough bleeding could affect implanation or conception all together? My period is expected in a week and a half, so its too early to take a HPT test.