The title says it all. This will be my first pregnancy dealing with an OB and I'm a little worried how my "pants on" stance is going to go over.
My last 2 were with a homebirth midwife so it was not an issue.
By "pants on" do you just mean that you don't want a pap or internal checks? I'm pretty sure the only reason you'd take them off is for a pap at your first visit (which you can decline) and internal checks further down the line (which you can also easily decline). I don't know your OB or hospital, but I don't see why this would be a problem.
With my last baby I had dual care. The nurses got me ready to see the OB in the room and told me to undress, and I just didn't. I did have my group B strep culture taken at 35 weeks, but I asked not to be checked at that time. They can't very well check you with your pants on. This time I am just seeing the homebirth midwife, and she doesn't do any routine checks before labor.
I'm seeing midwives at a military hospital, so it's pretty exam-oriented. I went in at 10+5 and they asked me to undress for a pap, pelvic exam, and vag u/s. I just said "I won't be doing that" and they left me alone. The midwife really wanted to see the baby (they're used to doing vag u/s on everyone in the 1st tri) and DH wanted to so she did a brief abdominal u/s. It worked just fine, even though I wasn't planning to do any but the 20 week u/s. Ah well.
They also do a routine breast exam and checked my fundal height, which I was fine with. I just told her I don't really want anyone up in my hoo-ha yet. I will do the GBS test when the time comes, but for now, I'm going to keep my pants on.
If I had a more compelling reason than "I don't feel like it" such as being an abuse or trauma survivor, I would make that clear to my care provider.