Tender/sore boobs.

Ka

My boobs have been sore for almost a month! Why?? It's not normal for me and I'm not pregnant. I had a normal period Jan 5th- Jan 7th. Took a few tests to rule it out and they're negative. I usually get tenderness around my period but it goes away with my period typically. I've never had this happen. They feel so heavy and uncomfortable all the time. Should I make a doctors appointment?