Like Clysta said, we can only speculate what could be wrong and advice to take pregnancy tests. Seeing as how this is a forum for teenagers and medhelp DOES NOT promote teenagers trying to conceive nobody advice you on how to get pregnant.
The pregnancy 18-34 forum would be a better bet for you. The ladies are helpful and as long as you're not a minor (under the age of 18) I'm sure they would be more than happy to share pointers with you.
It doesn't have to mean anything. However, since you're attempting to conceive you should change forums to one such as the 18-34 forum for advice. (That is if you're of age and 18+) Otherwise we can only give you ideas, but can't help you trying to get pregnant.