Ouch!
I have a similar issue, but on the other side of my body. Hip bones during double leg kick in pilates? Ugh. I have to alternate single leg kicks instead. :/
Things you can do - for the chair, consider a ****yx pillow. You can order one from Amazon and it helps a lot. It will get better. I used to need one for movies and long car trips, but I noticed that I forgot it and would be fine at some point.
For sit-ups, consider adding padding like sitting on a pillow, or a pilates mat. Or a folded yoga mat.
It will improve as your body changes.
VSG with Dr. Salameh - 3/13/2014
Diagnosed with Binge Eating Disorder and started Vyvanse - 7/22/2016
Reconstructive Surgeries with Dr. Michaels - 6/5/2017 (LBL & brachioplasty), 8/14/2017 (UBL & mastopexy), 11/6/2017 (medial leg lift)
Age 42 Height 5'4" HW 319 (1/3/2014) SW 293 (3/13/2014) CW 149 (7/16/2017)
Next Goal 145 - normal BMI | Total Weight Lost 170
TrendWeight | Food Blog (sort of functional) | Journal (down for maintenance)