Asking if anyone else has had this happen

Cycle day 4 boobs are sore, nipples are tender (not pregnant) tested bfn

I normally get a little tender one or two days prior my period starting and goes away the day period starts

Today is cycle day 4 definitely not pregnant (unfortunately)aunt flo should be gone tomorrow 😁

But my boobs have not settled down and little nausea on and off

What could the cause be from??

I have regular cycles

I'm not due to ovulate for at lease another 10 days.. anyone have some input,

Thank you