It may be your breast lactating. It is normal if your nipples are stimulatedmaybe by your partner- your shirt rubbing against them or whatever it could stimulate a let down of milk. You should be fine to breast feed. This is normal
The same thing happened to me. Except I was leaking this fluid from both breasts. Sorry I can't answer your question..
I would just all when you go in for your next dr.'s appointment. If they said it was normal, there is probably nothing to worry about. He would have told you if something could be wrong.