Hi Susan
I am not a doctor, but I know most doctors will tell you not to push yourself. My doctor, Dr. De Smet that has done over 3000 hip resurfacings, says "Listen to your body" This is not normal PT or training, the "no pain, no gain" rule does not work well for hip resurfacing.
My doctor told me to walk, walk and walk - but not to the point it would hurt. You will have plenty of time to push yourself, but you are only 2 weeks post op. I was able to walk almost 1 mile a day at 15 days post op with one crutch - but I did not have any excessive pain after I did. My suggestion is to listen to your PT and to your body. If it hurts, back off. You don't want to be taken a bunch of pain meds if you don't have to.
I don't know what your doctor was suggesting or maybe you might have misunderstood his suggestion. It is your body and I have read hundreds and hundreds of recovery stories. No doctor normally tells someone to push so hard it hurts - not at your early stage of recovery.
I would back off and listen to your body. Some people never even did formal PT during their recovery and ended up in the same place as those that did a lot. The body will heal and you can't push it.
Good Luck.
Pat