Masturbation

So I just kinda want some advice on something. So I started masturbating around like three months ago. I usually just go with clit stimulations because I haven’t really got the guts yet to try fingering cause...I’m not really sure how to do it..😪

So the problem I’m running into is after I hit my kinda high with clit stimulations and want to keep going, I get this kind of pain when I try to keep rubbing. It’s kinda disappointing when you get into it but it starts to hurt.

Any tips? Is it normal?