Vaginal Cyst and problems conceiving

I originally got a vaginal cyst after I got pregnant with my first baby in November of 05 but did not notice it until I had an ultrasound. I had it drained when I gave birth to my daughter in July of 06. Since August of 06 it has come back and has gotten bigger and bigger. When I last went to my OBGYN in September 07 they told me it was bigger than a golf ball but definately a lot smaller than a tennis ball. It is blocking my cervix and has had no feeling to it until recently in the last 6-9 weeks. I haven't been on birth control since January of 07 and although my husband was gone for 6 months march-september for training in the air force we still haven't conceived. I am really starting to think it is my cyst because we are doing everything else right.... does anyone have any suggestions or advice that could help me/us?!?!?!?!?!? If so that would be amazing, I would appreciate any kind of advice/past dealings/suggestions on this issue!!