I'm on my second round of clomid attempts. The first time I had 4 cycles worth, and only had a single CD21 BT to confirm ovulation. The others I used OPKs for.

This time I'm not even having a BT, rather just OPK's. I know that my first round of clomid attempts was with a dodgy doc and he didn't do any further investigations, but this time my doc is my IVF doc and he has my full history. I don't think it's the norm to not have BT and u/s monitoring, but in my case now I'm confident my doc knows what he's doing (basically, he and I both don't hold much hope for the clomid therapy, but at least I'm doing 'something').

As for the u/s, I have to say that I've had many of them and I've never found them uncomfortable. A little undignified, but otherwise fine. I'm sure that ladies who've had children would consider a little u/s probe to be nothing in the big scheme of things