I am a 59 year old female who was diagnosed almost three years ago with ITP. My "normal" was around 35k with very few side effects. In January, 2018, I developed pneumonia and my platelets fell to 13k. My hematologist decided to put me on Promacta (50 mg) and I have a new "normal" of 67K. After five months, I am finally feeling well enough to begin exercising again. I have done Pilates for several years and have always felt it is easy on the joints; however, after my last session, concentrating on the thighs, I am so tight and sore, I cannot move without pain three days later. For the first time, we did a more strenuous exercise and really had the cardio going for about 5 minutes. I am wondering if this is another thing to deal with. Does ITP cause muscles to have a slower recovery? Do I need to really back off?