<s>[INST] We are trying to get pregnant for last 2 years.. Tried 7 cycles with clomid and 2 cycles with Ova shield and now last two cycles with siphene 150mg. taking Glycomet and folic acid as well.Not getting preganant.. Periods is regular and follicular study also done. Took HSG test and tubes are clear and uterus is normal.. what can be the reason of not geting pregnant [/INST] Hi, Thanks for writing to Chat Doctor. The cause in your case could be problem in ascend of sperms into uterus or fertilization or implantation or wrong timing of intercourse. These can't be diagnosed. I would suggest you to go for intrauterine ingestion of sperms (GUI). Here sperms are washed and injected into the uterus so that problem in ascend of sperms is solved. I suggest trying for 3 cycles of GUI. This will increase the chance of conception.  You may conceive for the first cycle only. After rupture of follicle egg will be alive for 12 to 24 hrs. Intercourse should be planned within that time or nearer to it as sperm survive for 2 to 3 days in uterus. Hope I have been helpful. Regards Chat Doctor.  </s>