My only advice would be to BD anyway, I also thought that EWCM was a big indicator. I think the ONLY FOR SURE way to conceive is too BD at all the right times!!! BABY DUST TO YOU!!
Hopefully someone can help you out more than I can!
I have a 30 day cycle...and lets see...my first son...i did on day...13, but I think I had a day or two shorter cycle then...my second son, I did on day...14. So I would say yeah, if you are on day 11 of a 26 day cycle...youd be about right...maybe your doctor is giving you your shots to late, thats why you havent concieved yet...I would do the BD today anyway...and tommorow...and the next day...lol...