Why did my breast hurt?

I’m 16 and sexually active, tonight I was having flu like symptoms and had chills all over and was shaking. I had on a really really tight sports bra (I’m a 34g) and when I finally got home and took it off, it was EXTREMELY painful in my nipples, a sharp tingling feeling. What’s going on? Thank you!

Ps one day from ovulation but I’ve never felt this before