If you think there's a problem, then I would suggest getting tested. My DH & I have been trying 4 months now. He was exposed to a lot of stuff in the Navy, so we're both getting checked out soon. My body is a little crazy. Nothing scary, but I want to get checked out now instead of waiting a year & then finding out something was wrong. It's your body, you have the right to get checked out now if you want to. If you're worried, go to the doctor. Everybody's experience is different. Don't let anyone discourage you from going to the doctor if you want to. It's only been 6 months, so there might now be anything wrong, but it is your choice to get checked out. Besides, most things I've read say to get checked out before you start trying. Statistics say that the majority of women will get pregnant within 3 months. Also, get him to get checked out too. 50% of infertility problems are the man's sperm. Good luck with it! And try not to stress out too much, that can hurt you're chances. Make an appointment, that in itself will relieve some stress.
https://www.countdowntopregnancy.com/tickers/dpo.png?d=1275022800;7;32