Spotting at 9 wks

Mary

I'm 9 weeks with my 1st pregnancy and I have had spotting/bleeding/light cramping since the day before yesterday. It's not as heavy as a period. Went to the doctor yesterday, they tried finding the baby's heartbeat, but they said that the baby was too small to find anything, I don't go back to the doctor till next week. I'm so worried and scared, has anyone gone through this too?