Help! I have a rash!

newfone

Okay. So almost a year ago I started getting a rash on my lower hip around the time of my period. It slowly gets bigger every month and only flares up when my period is about to start. And when it calms down, I have this almost rough/dry patch of skin. I've googled it and Google has a whole bunch of different answers. Wanna avoid going to the doctor since I'm always there, just want to know if anyone else gets this or if I definitely should get it checked out.