Had my first at week three (right on schedule!), then started losing again. Stalled again at week 6. I am now at week 8 and have not lost a pound. Am still doing ok as my loss for 8 weeks is 40 lbs but I was hoping to make it to 50 by year end. Hope I can still make it!

I think you can achieve this with not problem. My rapid weight loss didn't even start until about week 7. Everyone is different. The biggest factor in how rapidly the weight will come off for you at this point will be activity level. The more active you work to become, the faster it will come off. I am not saying running marathons or anything, just even getting out and walking, or swimming. Moving around for about an hour a day should be your first goal, take baby steps and work your way up to it if you cannot do it right away.