Hi Rubstar, I myself went through the exact same procedure as you 5 years ago. My fibroid was HUGE, 12-14 cms. I came back to my practice but took it slow for the first year. Yes, I too did not have much feeling in my scar for a while & also had discomfort during forward bends. Belly down postures took me approx a year to get back to. You have gone throgh major surgery & your bdy, nerves, muscles take a while to get bakc. my lower ab muscles will probably never get their full range bck. I am now a Bikram yoga teacher, doing all the intense classes at training did help me loads. Give yourself at least 2-3 years before you expect a full practice. your body has gone through trauma & needs to adapt. My practice now is stronger than ever & I feel that most of the internal ( & external) scar tissue had healed quite well.Keep up the work, keeep yourself hydrated & back off when you need to.