Bleeding at 7 weeks

Sarah
I have been spotting since week 5. I have had 2 ultrasounds since then and my last one was on 4/20. The baby is doing great but they can't really find a reason for the bleeding. I hate seeing red blood every day when I go to the bathroom. No clots or cramps. The baby seems to be doing great, which makes me happy, but has anyone else had this happen to them?