Is it normal for my vagina to so, yeah i was feel hard on the inside?

So, yeah I was feeling around in my vagina for the first time and inside my vagina towards the entrance there is this hard bump thingy. I never seen or touched another vagina so I don't know If its normal or not.

When I say inside I mean actually inside my vagina. Its not on the outside at all. It is not my hymen. I feel this hard spot as soon as I put my finger in. It is not my cervix, I know this becasue the cervix isn't that close to the entrance of the vagina.

The hardness I feel is at the top o my vagina. (When I say top, imagine putting you're finger inside a vagina and then lifting your finger up vertically.)

The hardness I feel at the entrance is round and smooth. I can press it and it gives in a tiny bit but it doesn't hurt.

I can feel this hardness extended from the entrance of my vagina to about 2 inches in.

I enclosed a picture that I made quickly on paint so you can get a visual of what I mean. (Don't worry its not graphic or anything). The pink area is where I feel the hardness. The black area is just the rest of the vagina. The picture I drew shows how far back the hard feeling goes as well as the shape of the hard part in the entrance of my vagina.

Please, someone tell me if this is normal or not.

(In case you cannot open the image or whatever, here is a link to the picture. https://s26.postimg.org/tly1kr80p/hardness.jpg)