I had 2 cycles of Clomid - I was ovulating very irregularly on my own (PCO). I was very closely monitored with BTs and U/S to see if a dominant follicle was developing and when there was one I had the trigger shot (Pregnyl). I was initially taking Clomid CD2-6 and then after that a BT and if a the follicle wasn't at the right size then some more Clomid and more testing until it was. My FS indicated that there were no problems with being on Clomid for more than 3 cycles. As long as I was Oing then I was going to stay on it and if I didn't O then I would move to injectibles.

From the sound of what's going on with you, the Clomid isn't working that well at causing O (which is its purpose) otherwise you would be having more regular cycles. I think you'd be much better off in the hands of a FS who can monitor you closely, run some tests and change you onto injectibles if Clomid isn't right for you.

Good luck