19 down!

My hard work is paying off. I am seeing results. When I weighed myself this morning I had lost 3 more lbs!!! So that is a total of 19. If I lose one more, I will have officially lost more than I ever have! When I was on Weight Watchers I lost 19 lbs in 9 months. So, I am very excited and very proud of myself for sticking with it. The Nutty Fudge Torte is gone. The kids ate the last of it last night. I did have one small crumb, I had to try it. But I did not give into temptation. I had an orange for dessert last night. I feel very good about my progress and all of my hard work. Thursday, I hurt my back, though. I don't know what I did, but it is killing me. So I haven't walked in 3 days. (Meaning exercise) SO I need to get back on track tomorrow. I don't know what to do, though. Is there a way I can exercise without hurting my back further? Any ideas?