Hello, You need not worry about getting pregnant. Firstly, you have been on treatment for prolonged bleeding which means you may be having problems with ovulation in this cycle. Secondly, you have taken the emergency contraception which in itself is very effective. You may see some withdrawal bleeding about a week from now. If you do not see a normal period after completion of the progesterone treatment and three weeks after the incident, see a specialist for further help. Since you have added to the already disturbed hormonal milieu, you can expect some menstrual disturbances for a couple of months. Hope this helps.