hi, i have been taking dronis 20 for the last 4 months. My withdrawal bleed came in this month from 1st april to 4th april. I started taking the pills on 4th april and had intercourse with my partner on 7th april. We used a condom through out but also had intercourse without a condom in the last. he is not sure whether he came inside me. My withdrawal bleed is due on 1st may. also i have been taking the pill everyday at the same time. should i be worried ?