So last night I was laying on my tummy and I got this sharp pinching pain under my left breast and it would come in waves. I then payed on my back and kinda rubbed around the breast to see if I felt any lumps (I did not) and then massaged it to try and ease the pain. After a few minutes the pain subsided and I fell asleep. I woke up in the morning and layer on my tummy again and the pain started back. Just a sharp pinching pain under the breast. I’m currently PMSing and so my nipples are very tender before my period which is normal, but the pain under my breast scares me. Has anybody experienced this? Does anybody know what it could be?