bleeding at 9 weeks.

I have bleeding this morning at my week 9. Due to first pregnancy I was worried and went to Kkh Urgent O&G Centre to check up. The doctor scan my baby is fine with heartbeat but I have a small tissue clot which need do some experiment. At night I still have bleeding. Although doctor say not to worry much and bleeding will still happen in minor for 2 to 3 days. I still quite worry. Anyone have this issue also?