Possibly too many mature follicles

So i had an ultrasound today to check my follicles and although ill need to get checked again in a few days, the PA says that I'm on my way to having more than 3 or 4 mature follicles which leads to the possibility of multiples (which my hubby and i are ready and okay with IF I even get pregnant) but she made it seem like if too many are mature than the doctor might cancel the IUI.... this would be devastating because we have spent so much money on the meds, appointments and travel already. Its been almost 6 years of TTC and we are just wanting to be parents already. I really hope they don't cancel because this might be the closest we've come to finally becoming parents. And I feel like if I were to get pregnant, it would most likely only be one baby anyways. Im trying not to stress but the thought of possibly canceling and losing this progress is very frustrating. I really hope that if it comes down to it, we will be given the choice to proceed instead of just being canceled. Guess I'll have to wait until my next ultrasound on Thursday.