Is it normal f u feel lyk there something's always tickling ur armpit?

This has always been my problem even before. About two years ago I think. I thought I already prevailed over this dilemma but it's all coming back and it's very difficult when you're at the office working.

Okay, my sole problem is that I feel unease, as if somethings tickling my underarms every time I am wearing a fit shirt, jacket, office uniform, blouse or anything that would snug fittingly around my armpit.Especially when these pieces have those part when the hem's stitches come together nearest the armpit! Duh! I sometimes even gave up writing anything on my keyboard because of this (Thank God, I'm wearing sleeveless shirt now!). Tell me, is this normal?