A little over a year ago I bought an exercise bike. This one: Amazon.com: Marcy Recumbent Bike: Sports & Outdoors

I realize it is a cheap bike but I couldn’t afford anything better. I have been using it 5 days a week since last January, started at only 10 minutes and worked up to an hour and now i am riding level 2 30 minutes level one 30 minutes non stop. I lost 53 pounds since I started. I now have a new problem. After the first 30 minutes, my butt goes numb. This didn’t happen until recently, after losing the weight. I have the bike adjusted as close as possible, (I am short, 5 feet 1 inch tall, I have to put a pillow behind me and wear shoes) I have tried adding pillows, but nothing seems to stop my butt from going numb, and now it is sore throughout the day.

I live in Colorado, and it is often cold and icy outside which is why I got the exercise bike instead of riding a regular bike. Also I enjoy watching a tv show while I ride. Does anyone know what I can do to stop my butt going numb while I ride?