Dr. Prakash Kothari's answer: You should wait for one year to conceive. If pregnancy has not occurred then you can get a sperm count test done. But the thing to keep in mind here is that there should not be a gap of more than 4 to 7 days between your last ejaculation for sperm test and the ejaculation for the test. After coitus, the woman should remain in a position with both knees bent and chest down to increase the chances of pregnancy.
If you are not getting pregnant, then after sex, try to bend your knees and stay near your chest for 15 minutes, so that more sperms can reach the fallopian tubes. Doing this increases the chances of pregnancy. The less bile there is in the body (hot food and chili-spices create bile, eat less of them), the higher will be the number of sperms and the speed will also increase.