Pain in breast

Mariella • Kittens made me do it!
For 3 months now, I've been having sharp pain on my left breast. Got checked, everything fine with the echo... Slightly high prolactin.
​Got the prolactin treatment, and the pain reduced. The treatment ended 3 weeks ago (prolactin back to normal)... And the pain is back, and worst... Just moving hurts...
​I'm thinking on going back to the doctor, but wondered if it was something someone else has experienced. 
I'm on the pill, but planning on TTC on next cycle.