I only lost 20 lbs and it's been over a month. Is it normal to have a rny and lose this little weight?

It sounds a little on the light side. During the first couple weeks your body is healing and you are losing the Water weight that you gained from the surgery and hospital stay. The amount of weight loss is also a function of how much weight you need to lose. Double check to insure you are following all the requirements of the program. Sometimes medicines can interfere with weight loss.

I've been a slow loser as well. But I'm a post-menopausal female *and* dropped a lot of weight pre-surgery, so that may be affecting it. Also, how much weight you have to lose can affect your rate, too, as James mentioned.

I don't recall exactly how much I lost in the first month but I remember thinking it should have been more! I had lost about 10 lbs between the pre surgery liquid diet and the post surgery few days, I was down 10 when I got home. Then when I went back to the dr I was only down about maybe another 10 and I was upset too. Don't worry! 10 months out I am now down 110 and it is fabulous! It started moving after I got more active after recovery - don't sell that recovery short! You need to heal. Take your time, stick with the plan and it will happen. Good Luck!