Originally Posted by DayDreaming

Don't worry too much, you haven't been waiting that long.
I sent my application (renewal) in July and still have not been approved.
You can call USCIS if you want, but honestly, they are not going to help you. I called and e-mailed them several times and all they say is "your case is currently under review". They won't give you any other information.
I suggest after 105 days has passed to contact your congressman/woman. I did this and I was surprised to get a call from them. They are currently trying to help me. Will post again if it is successful.