i need assurance

So my mom is traveling somewhere this week (safely) and I have to stay with my grandma. I feel dirty and disgusted with myself if I touched myself at her house so I got it out all today so there’s no urge to want to.

But after I orgasmed I wanted another one so I went for it but when I went to clean myself up everything from my clitoris to the opening was sensitive aF. I just want to know if it’s normal for it to be sensitive at the opening too or if it’s just because my period is on its way in like 1-2 days.