Montgomery gland discharge!

Hi,

I have a small amount of watery brown and sometimes a thick yellow small amount of discharge coming from one Montgomery gland only when I squeeze on one breast only. I am 43 yrs old, my last mammogram a few months ago was normal. I noticed a tiny black scab on my Montgomery gland a few weeks ago. I picked at it and squeezed and that's when I noticed the discharge. I have an appointment to see my obgyn in a couple weeks, but meanwhile I am scared out of my mind!!
Could this possibly be normal or should I be worried. Just wondering if anyone might know anything about this. It only happens on my left breast. I do not feel pain or any lumps on my breast. Just this weird discharge whenever I squeeze. I keep squeezing it everyday to check if it is getting better or worse for my own reassurance. Not sure if I am making it worse by doing that. I am just scared. Any ideas would be greatly appreciated!!

Thank you straydog! Yes I have an appointment, and I apologise, I do not see response from you on June 25 under my post. Could be a glitch? I was just looking to see if anyone had anything similar, just for my own reassurance not to take place of a drs opinion. I am a worry wart by nature , so I'm always looking for opinions before hand.