L.
Sometimes they don't switch the dosage, but the days you take it. That is what my dr. did and it worked.
A couple of questions - is your dr. a fertility specialist? If not, I highly recommend that you switch drs. The first time I tried to get pregnant I stayed with my regular dr. and we did clomid, with different dosages, and it didn't work. She did not do ultrasounds to see if it was doing its job - so basically the problem was not getting the dosage/timing right. I felt I wasted months and months with her. (It took us a total of 14 months to get pregnant).
Then I switched to a fertility specialist. We had a plan of attack - three months with clomid, then onto the next one. Often they recommend artifical insemeniation to also increase the chance of getting pregnant. The big difference was that they did ultrasounds to see what the clomid was doing to my ovaries and if it was working. So the first time it didn't work, the next time they switched the days not dosage and it did work. They also used the ultrasounds to determine the correct day to give the shot. And I got pregnant the first time with that dosage.
I had my second child with no help (again it was try 3 times with no help, then we do clomid).
I'm now pregnant with my third. I had to use clomid again - my PCOS came back. And again they used the ultrasounds to determine what was working.
My dr. is Dr. Chen of Progressive Care for Women at Northwestern.
Good luck