Advice please

I recently switched my obgyn doctor because the last doctor I had put me on letrozole and said that within 3 months I would be pregnant and he never did follow ups in between my cycles. I'm now on cycle 4 and no luck so my new doctor is prescribing me clomid and said that I have high chances of twins or triplets. He said I will be on the 3 month cycle rather than 6 month cycle and will do follow ups. He also says if I don't get pregnant within 3 months we will switch to if. I'm really trying not to get my hopes up so any advicd please me know.