I am about 4-5 weeks pregnant, and I am experiencing heavy red bleeding. It started about the same time my normal period would start, and it feels about the same as a normal period would. But I am concerned that this could be happening for several different reasons. I am not in as much pain as a miscarriage would cause, but just a little back and abdominal discomfort as if it were my period. The same day the bleeding started (yesterday), I was abnormally fatigued, hot, dizzy and short of breath while simply standing up doing my make up but not in any pain what so ever, then about 5 hours later I had a little normal discharge followed by a small amount of blood. Later that night before bed, the blood was flowing heavier and was a combination of red, new blood color and a little darker like the color of old blood. I put on a maxi pad and went to bed. I woke up this morning and went to the bath room, and i didn't have much blood on my pad, but just a little bit of dark blood mixed w/ a little bit of bright red blood. But when i was done urinating, a lot of bright red blood came out and was still in the toilet even after i flushed. Almost all of what I'm experiencing seems to be similar to my period, but I'm worried it could be something more serious. This past week has been a very stressful one, and i did have a panic attack the night before the fatigue, dizziness and bleeding started (2 days ago), and I'm wondering if this could be the cause of what I'm experiencing?