Could this be our problem?

When we first got our blood tests done for fertility checking my AMH levels were low. No big deal, apparently they fluctuate month to month.

I went for my scan today, doc reckons I'll ovulate over the weekend but he could see ONE follicle. It was big which is good, about 11mm but there was literally only the one.

Do you think that could be our problem? The doc didn't say anything about there only being one, I read there should be multiple.

*He said the follicle was a good size and also my lining was a good thickness (9mm). I am on CD11, we have to go back Monday.