I've always used pads for my periods just because that's what my mom always used, and I never cared enough about the mess to switch to tampons. But a little while ago, when I was 17 (I'm 18 now) my cousin was over and let me use one of the tampons she had brought.
It went in fine and all, but within five or ten minutes I started feeling REALLY sick. I'm not really sure how to explain it. I got really dizzy and I had to lie down on the couch, and I ended up throwing up a couple times. I could feel that the tampon felt uncomfortable in me, but I didn't want to give up and take it out. After a while I finally went to the bathroom and removed it and put a pad in, and went to lie down again because I still didn't feel well, but recovered after a bit.
Anyway, I told this to my best friend recently and she said it sounded like Toxic Shock Syndrome? But I'm not really sure what it could have been. Thoughts?
EDIT: Thanks so much for all the comments. I'm going to be seeing my gyno in about a month so I'll talk with her about it. It sounds like it was a vasovagal type of response.