Trying to conceive

Hello everyone! I just recently suffered a miscarriage.. I found out I was pregnant on the 6th and then found out that same day I was going to loose my baby. I officially miscarried a week and a half later. Could I possibly be pregnant again? What are the chances I could get pregnant that quick? Also if my boyfriend doesn't cum inside me but close to my vaginal opening what are the chances I could conceive?? Please help I'm heartbroken I lost this baby.