Welcome to Gaia! ::

You certainly should not start worrying at only three months. I do not even think that fertility specialists will see you until you have been trying for one year. Women are only at peak fertility about two days a month, so you are only talking about six days here so far.

Now, that being said, you should be seeing a doctor. When women decide that they are going to start trying for a baby, they really should talk to a doctor about it. This gives the woman a little time to find an ob-gyn that she likes and wants to see throughout her pregnancy if she does not have one already. It also gives the doctor a chance to look her over and make sure she is healthy enough for pregnancy. A good doctor will give you advice, explain your cycle, explain how you can figure out when you are more or less fertile, etc.

Good for you for getting off the drugs. You should also have your husband make sure that he is drug-free for at least one month before conceiving (if he does drugs or anything else, maybe he does, maybe he doesn't, just pointing it out in case). Marijuana can make men less fertile.

Men make new sperm all of the time, so they get rid of the old and make new, clean, and healthy stuff before too long. Women are different. We have all of the eggs that we will ever have when we are born. That means that any drugs and garbage that we put into our bodies can get into our eggs and stay there, causing problems when we do get pregnant, even if it is years later. So make sure you stay off all of that stuff in the meantime as well. I just point this out because many women don't realize it. They think they can drink and do drugs right up until they actually get pregnant and that it won't hurt the baby.

I wouldn't worry too much. You've only been trying a few months so I doubt there's anything wrong.

Like Lorien said, women are only at peak fertility about two days a month so your chances of becoming pregnant are pretty low.

I read somewhere that you have about a 12% chance of becoming pregnant if you have sex during those fertile days. And besides that, alot of women miscarry before they even know that they could be pregnant. I read somewhere(I never remember where I read these things >.<)that 70-80% of all pregnancies end in miscarriage but only about 10-15% recognized pregnancies end in miscarriage.

But you should also get to a doctor. If you're really worried, ask your regular Gynocologist(pardon my spelling)to examine you. It's always best to get an exam before trying to get pregnant and almost as soon as you find out.

Good luck =D