Meniscus Inner Knee Tear

I was going to PT the 3rd week after surgery, the PT had me lay me on my stomach and he stretch the leg with knee back and forth many times. After that he put me on the leg press approx. 80 lbs and push the weight with both legs and approx. 40 lbs on the injuried knee. My knee was swollen and painful. Was this too agressive ? I started going to a different PT after that, less agressive, but my knee
still hurts, only tendonious below knee and around knee cap. What gives ??