I was spotting a couple days ago, and on 2/21/13 there was brown discharge with blood in it. I passed it off as implantation bleeding. but then, I woke up this morning, and it was heavier! i'm about 4-5 weeks. it's not like a full on period, but it's heavy, red, and clotting and i've also had abdomon cramps ( A LOT LESS PAINFUL THAN PERIOD CRAMPS. ) i'm so scared that i've miscarried! this is my first pregnancy, and i can't help but think either i miss carried, or got my period. i researched and a lot of women have had their periods while pregnant, and had healthy babies. but as i said, it's not like a full on period, and it has no smell whatsoever. i'm so scared.. help me, please!!!