When can the doctor tell?

This may be a dumb question, but I always know every time I go to the gyn for my annual and she does a pelvic exam, she always tells me that she can tell I’m not pregnant.

Now I’m TTC for the first time and I coincidentally have my annual exam this Thursday, at which time I’ll be 8-9dpo and about 6 days from projected period. So it would be too soon for a pregnancy test to show up positive, but will my gyn be able to feel if I’m pregnant during the pelvic exam?