<s>[INST] i am getting my follicular ultrasound done today...i am 23 and trying to concieve for the past 4 months..i have regular periods..and i am on my 13th day of the cycle today..we had sex yesterday..will a follicular study today reveal if i have concieved today ? [/INST] Hi, A follicular study shows the development of the egg in the follicle, and can indicate the size of the follicle and can identify when the follicle ruptures. It cannot say if fertilization has occurred or not. Have you taken ovulation induction as well? If you have been trying for 4 months only, I would advise you to wait for 1 year, as most couples(85%) conceive in a years time on their own. The remaining need to be evaluated for the cause and then treated. The most likely period to conceive is 36 hours after the follicle ruptures. Hope this helps. Regards. </s>