I got my last periods 11 days before , i am trying to conceive eagerly . I have thyroid and pcos . Day 10 in got upper respiratory tract infection for which dr gave me azee 500 and sinarest i took one dose felt better ,but in night i could see bleeding dowm .. i m really sad as it was my ovulation window and i was  planing for conception. Is it  becoz of medicines that i got periods back or smthing else .