I don't have my period but I have tried to put in a tampon in before. I don't understand how a tampon could fit in there because the vagina is so small!
Dr. Kroman says...
If you haven’t started puberty yet, your vagina still will not have developed and you would not really be producing much discharge which would definitely make it hard to put a tampon in. Remember girls use tampons during a time where there is quite a lot of fluid (blood) so it should slip in quite easily. I don’t recommend trying to use a tampon again until you have your period.
When you do have your period, the main things you need to do is get in the right position and of course RELAX. The muscles of the pelvic floor are very strong, so if you’re not relaxed, it will be very hard to put the tampon in. Even before you start you period, it is important to get to know your body. Get a mirror and have a look where the tampon is going to go before you start. If you want to have another go, an easy and convenient position is with one foot on the toilet seat. Wash your hands well then use your index finger to gently push the tampon past your labia (outside folds of the vagina) into your vagina. Push it is as far as it will go - don’t worry, you can’t go too far. Make sure that the strings are hanging out for easy retrieval. When you’re done, you shouldn’t be able to feel the tampon. If you do, then you haven’t pushed it in far enough, remove it and start again with a new one.
Don’t forget, your pack of tampons will also have usage instructions inside, so have a read of those too. There are several sizes of tampon – mini, regular and super. Some have smooth covering to help ease them in. You might like to start with a mini one of these.