hi..i m 20,unmarried...i had irregular periods for the last three months...in the sense i were bleeding for 40 days....and my doctor advised me to take duoluton l tablet for 21 days...at the end of 25th day again i got periods...on the first day a white coloured tissue like substance came out with more pain...after that it stopped bleeding on the 4th day...why i got that tissue like substance?....will this problem affect my pregnancy after marriage?