Have any of you used a dilator for medical purposes??

Carolina
I don't use tampons because it really hurts to put it in and once it was in but the pain and the discomfort didn't go away so I took it out. I want to be able to use them and so I read about dilator widening your vagina so intercourse and stuff like that is more comfortable because I might just be very sensitive/tight. I'm 17 and still a virgin and just want to know if any of you have ever used them and if so do they work? Thanks!