I'll chime in with my .02 since you are desperate for answers.
I would have your vet take a look and perform a fertility test...that would be the only way (I would think) to be able to tell for sure. I'm fairly new to breeding and can't give you an answer based off of what I have experienced. You say you still have a lot to learn? I would definately try to find someone in your area willing to share their knowledge with you in any case--it's so much better to be able to experience and learn from things "in person" when possible.
As for not getting many replies, please don't take it personally, I'm sure it is nothing against you. I have also noticed a huge decline in rapid response answers here from breeders lately. Over the past few months, there have been tons of newer members who ask for help, and then lash out at those who respond for whatever reason. I think that alot of people are just hesitant to answer at this point.
Sad, really.
Anyway, good luck and I hope you get the help and answers you are looking for.