i have been walking every night since april to lose weight. so far i have lost 22 pounds but im still above my ideal weight. my speed is about 3-3.5 mph. i started out doing about 2 miles and gradually increased to 5 miles per night. but i kept developing blisters on my feet and started vomiting blood after walking and ended up in hospital with a tube up my nose (turned out i was bleeding in my stomach) my shoes are very expensive and are specifically for walking so i figured the blisters werent from wrong shoes, that i must be walking too much. so i cut down and am now averaging about 3-4 miles per evening. i also do some leg lifts, stair stepping, and about 50 situps each night. now i am having pain in my left shin thats not going away and so im going to doctor tommorrow to find out if its a shin splint or not. its just getting aggravating that im still fat and things keep happening to hinder my progress. i also have a lot of loose skin in belly and upper thighs. what more can i do to help tighten things up? i just have to be careful not to do exercises that are too body demanding because i have MS and develop fatigue very easily. by the way, i am female 32 yrs old, am 5'5" and currently weigh about 160.