<s>[INST] Hi, after calculating my ovulation day (22th. to 25th june) we had intercourse on 23rd n 24th june i had cramps as i use to have before my periods, we had iintercourse after that for 2times n i also did hasthmaithun.....did these things lead to my periods.?i had my regular periods on 8th of July.please help. [/INST] Hi. Thanks for writing. Unless fertilization occurs there wont be pregnancy. By intercourse after ovulation or by doing yoga don't prevent pregnancy. I would like to know since how long you have been trying for pregnancy.  Is your husbands' sperm count normal? If so you can try ovulation induction pills and get a follicular study to know the status of ovulation and have intercourse on that day to increase the chance of pregnancy. Hope I have answered your query. Good day. </s>