If you feel uncomfortable then don't do it. But since your a virgin girl, make sure you warm up first don't rush into it, it'll only be painful if you don't expect it or have not prepared yourself sexually. Since your a first time girl it might not be all that so don't worry if it's not great the first time it'll get better I'm sure.
Also don't feel pressured about being a virgin and wanting to break the seal quickly, it doesn't matter if you are or not.