Cmlc
o.b. is the brand of the tampons, those are the smaller ones that can be easier to put on, i also had a hard time when i first tried tampons but i wasnt a virgin, so go figure!!
good luck, i would recommend it, even though i try not to use them all the time because my doctor said it can affect your hygiene so try to shower every time you have your period especially if you tampons all the time.
hopes that helps