pregnancy after miscarriage

My husband and I found out we were having a baby almost 3 weeks ago. We lost our son may of last year and tonight while I was in the shower I had some bleeding it was more discharge streaked with blood. I'm a little scared at the moment that the same thing that happened to our son is going to happen to this baby. I've done everything to relax like he asked me to do. I'm just a little upset and scared.