Hello, my 16 year old daughter who is very active and athletic, has been complaining of left breast pain/tenderness to touch on left side and underneath the breast for about a week now. No lumps no redness, very sensitive to touch or when raising arm above head. What can it be?? Muscle strain??
maybe a period
or just some odd hormonal imbalance from medication or simple things like exercises.
I'd give it a few days, most things natural to the body go away on their own within a week or so.
Are you almost starting your period?