black discharge from nipple/need advice in general

On my mom's side: grandmother and all her sisters (6) had breast cancer around age 35, and one brother had it also. My aunt had the same black nipple discharge at age 30 and they ended up removing her breast by 31 and I believe it was dcis. My mother has a lump but cannot undergo tests due to a terminal illness. (she has Huntington's She is nearing death at this time). My grandfather died from two types of cancer...I am not sure which because I was small...I am unable to ask my mother because she is unable to comprehend or talk. On my fathers side: my great grandmother and her sister died from BC. They both had invasive cancer that moved to lungs and bones. My father's mother has a lump that's growing and her health is declining fast, she wont go get a mammogram because she is scared. My fathers dad died from colon and lung cancer. My father has a tumor under his breast and wont get a biopsy because he too is scared. his doctors say it looks cancerous so he is undergoing radiation treatments. My sister is having the same symptoms as I am...she is 29, I am 31. I have also hd cousins on both sides that have had dcis around age 30-35. They are living and doing well. I know that anything is possible but I have a bad feeling about this. I am honestly tired of waiting around. I know that something isn't right in my body. I can feel it. I have dreams of my deceased grandmothers standin beside me holding my hands while I look at my breast in the mirror. I have seen two doctors at the same diagnostic clinic. But in all total, 4 doctors so far suggest the brca testing and breast mri. But depending on the mri results, I will have to have a duct excision regardless. I don't see the point of surgery to see if it comes back cancerous.....why not just bypass the wait and added stress and just give me a prophylactic mastectomy w reconstruction? The women in my family always said to listen to your body and heart....I am. I thank you for all the input. its very nice

Thank you all. It is very hard to concentrate on everything. I graduate nursing school in dec and I am so excited. Something strange is happening to my sister as well. She is presenting with similar symptoms of discharge that are sudden ( i stated this somewhere above incase youre new to my story)and dreams of our grandmothers. She told me about her dream this afternoon. I just find this too wierd. But anyways I will have the breast MRI done for sure, but several doctors have said that it may not pick up on mri if its at a microscopic state. If for some reason it doesn't, then I fear I will sit and wait to be eaten up with cancer. Yeah its negative, but its the truth. The doctors want me to go to a breast surgeon and the genetic counselor. I just know something is wrong, I can feel it. I gave them in depth documentation I was able to obtain from my grandmother. She is the oldest one living. I have mixed emotions (personal reasons )and fear of results about the genetic testing for BRCA.I will probably get the BRCA testing done, but I know I will not have anything biopsied because once that area is penetrated, the risk of mutated cells escaping is increased and then the cells travel in the blood stream and settling elsewhere. All it takes is one mutated cell. Therefore cancer is spread. I have seen almost all the women in both sides of my family struggle with this and I refuse to. Thanks again for your input.