Hi, I am from Guwahati ,I am 20 years old. Actually I had an intercourse with my boyfriend,but my problem had started from last year September, I had intrcrse with my bf on septmbr 2nd week n period date was on 25th bt I did not HD regular periods from dan, on 3rd decmbr I went to dctr he gave medicine name Deviry , after tkn mdcn I hv periods on 10th decmbr, again on January 1st wk we had intrcrse again, from dat day again my periods is not regular, till now olso I m not having periods, I HV tkn DAT mdcn again on 13th Feb bt till nw no result, I have tsted for pregnancy bt its negative, I am not able to understand my problem, plzz tell what my problem is?