<s>[INST] i am taking prolifen on the 2nd day of my period untill the 5th day and i have been doing it for 2 months now how long should i keep doing this before i should concieve i am doing everything thati should on the right days i have calculated when i ovulate but still no results as yet how long should it take to work ?? [/INST] Hi, Thanks for writing to Chat Doctor. Routinely I advise prolific for 3 to 6 cycles and if it fails to conceive then change to alternative Chat Doctor. I suggest you to get your tubal patency done and if it is normal go for GUI.  It is intrauterine ingestion of sperms.  Here sperms are washed and processed, and healthy sperms are placed in uterus. This will increase the chances of pregnancy.  You can go for 4 to 6 cycles of GUI.  There are no strict rules to tell exactly when you can conceive.  You should have positive attitude and try your best. Don't take stress. That is major cause for infertility. Hope I have been helpful. Regards </s>