Hi....I do not know a whole lot about drainage either, but like your dr said, it is not normal. I am glad to hear your dr is on top of things, sending you for more tests. Hopefully the mammo will give you more info on what is going on. It is soooo hard not to worry, but you are taking the right steps!!!! If you are not comfortable with the results, or your dr isn't either, you can always ask for a breast MRI. Let us know what your results are, and how you are doing. You can always google breast drainage or check out some other sites that may be helpful as well. Please take care!
There are two things about your post that concern me. The first, of course, is the drainage. I am glad your doctor is keeping an eye on that.
The second thing that concerns me are the calcifications. Are they macrocalcifications or microcalcifications? I had a lot of microcalcifications on my diagnostic mammogram and I ended up being diagnosed with: ductal carcinoma in situ (DCIS), invasive ductal carcinoma and a colloid (spelling?) carcinoma.
Another question - are you having any other symptoms? Are you feeling fatigued? Can't sleep even though you feel tired? Is your stomach constantly upset? These are all symptoms of breast cancer. I learned this from www.breastcancer.org. You might want to check out that site.