Can you conceive right after your period ends? i am virgin and was trying for the first time but only the tip went in like 2 inches. precum pregnancy?

Plan B: Use over the counter Plan B if intercourse was within 72 hours to decrease the risk of unplanned pregnancy.

Yes: It is possible to conceive from intercourse just after your period ends. Your risk of pregnancy from the incident you described is less than 20%. Before you do this again, you should get on regular birth control so that you don't have an unintended pregnancy. Best wishes!