I have heard of going on birth control for a designated amount of time to regulate periods so that a woman can become pregnant. I have a friend who did this. You should ask your doctor about it. If one of your tubes is blocked, I think that means you can only become pregnant every other cycle since you drop an egg from one ovary one month and from the other the next month. You would have to find out which one was ovulating each month.

i have the exact same problem and have read that getting on birth control for a limited time can help... not sure .. im going to ask my doctor about it next week. did you ever have an ectopic pregnancy? i wonder if thats why my tube is blocked...