Stomach crease from sitting. I still have it when standing and/or lying down! How can I get rid of it?

I have noticed one day that after slouching when sitting, there is a red line/crease going horizontally across my stomach. The next day after waking up I looked and there's still a line! It wasn't red anymore but it's like a wrinkle and I just want to get rid of it! It makes me wanna get botox in it or something! Please don't tell me to sit up straight because I try to do it as often as possible, and It's still there! PLEASE HELP, CAN I GET BOTOX THERE? CAN I GET SOME CREAM OR SOMETHING ?