chance of pregnancy after miscarriage?

what are the chances of me being pregnant after a miscarriage? i had a miscarriage march 21st i bled til march 23. when i went to the doctor and found out i was micarrying they did an ultrasound and said that i had already passed the baby and the lining was amost done shedding my levels were already down to 9 when i went bsck the 23 i was completely done bleeding i had no trace of HCG in my system and everything looked normal so they told me i should have a decently normal period this month but i have yet to start im just a little worried