What's wrong with my Bristlenose pleco?

[IzzBizz]

I've had an albino bristlenose pleco (I named her Moon) for about a year and I really love her. She's my baby. I feed her blanched veggies and algae wafers. I semi recently added gravel to the bottom of the tank. It was an adjustment but after the first week she started acting like herself again. But now her scales appear to be raised and her belly seems irritated. What's wrong with her? Is there any thing I can do?? I'm super concerned.

Thanks in advance .

 

[Sewerrat]

Have you tested the water