Urethral ripping, I don't know what to do.

[elenalawson]

My name is Elena I am seventeen years old, the other day I went rock climbing and it was my time of the month, so I used a tampax to ensure I didn't make a mess of myself but I was rather dry that day meaning not much bleeding was happening, when I changed my tampax I felt a pain and didn't think about it till a few days later and today I had a look in the mirror and near my urethral it was painful and sore, and it looked like it had a tear above the urethral as well as slightly inside the vagina, I have never had sex nor do I masturbate, so I am sure due to not bleeding the dry tampax ripped my urethral when I removed it, the only problem is, is it serious? Should I leave it? Go to the doctors? I am not sure what to do exactly, please give me some advice.