It is uncomfortable for my wife if we use it right away too. Like you she is pretty tight, so we usually start slow. I'll use fingers for a little bit, then I'll use her larger dildo (1.75" instead of 2") on her to warm/loosen her up a little first. Then when she is good and wet we use the sleeve and she is able to enjoy it for a little while. But after some good pounding with it she starts to get sore. Sorry to hear that it was uncomfortable for you, I hope you get try it again and have fun.