I've been kinda experimenting with masturbation for a while now, but only recently started adding vaginal penetration (just with my fingers) to the mix.
I started with one finger and could get it quite far in (I have short fingers anyway but I could basically get my whole finger in), but once I tried adding a second finger, it felt like after a certain point it wasn't wide enough for two fingers - I couldn't get as deep with two fingers as I could with one, and it felt like somewhere further in from the vaginal opening, it got narrower and more difficult to get two fingers through (not impossible, but a bit uncomfortable).
(When I tried this I was quite wet with natural lubricant, so that wasn't an issue.)
Is this normal? Is that my fingers reaching the 'hymen' (which I know isn't really a thing)?
In case it's related, a couple of years ago I tried using a menstrual cup, but I had trouble getting it in, so I had to stick with pads. I've never used tampons or had sex so that was my first attempt at penetration.
Hope this makes sense! Sorry it's kinda long.