Can shower masturbation damage your sensitivity?

I started masturbating in the shower unintentionally when I was like 10, I didn't really know what I was doing but I sort of liked it so I did it a lot then at the age of 11 my vagina began to get less sensitive and so I thought I had done something terrible to myself but I didn't know what, I was too embarrassed to ask my mum so I just had to live with it, my vagina also began getting sore and a lot of fluid was coming out of it constantly. I'm 16 now and I'm feeling that I can't orgasm it makes my long-term boyfriend upset and I was just wondering if I damaged my sensitivity some way by doing that at such an early age?

Answers or experiences welcome ☺️ xxxx