Fingering👈🏼👉🏽🖕🏻

Okay idk if this is weird to talk to about but I'm really confused.im 16 and virgin and I always thought does fingering urself equal to having a penis inside u. So I was just exploring myself and everytime my fingers go in it burns really bad. I have done it quite a few times to the point where now I can take two fingers and also everytime my fingers go in I'm always scared because of how the inside feel. Again Ik u guys it's wierd  or maybe dumb to ask or say but if u finger urself how does it feel and is it supposed to burn or only if in the beginning.