sclerosing adenosis and focal stromal hyalinization

Hi, I am new in this group. My story is on June 2014, I was diagnosed Bi-rads 3. calcifications were found on the left Breast about 6 o'clock position and need 6 months follow -up. Since I did IVF on Sept. 2014, I received lots of fertility drugs, like Progesterone and estrogen. I found many masses in my left Breast. After egg retrieval at the end of Oct. 2014. I had a ultrasound check on my left breast and the doctor said it is a fluid cyst on 5 o'clock position and many fluid cysts in 9 o'clock position, nothing to worry. On January 9th 2015 I had 6 months follow -up for the calcifications. The digital diagnostic mammogram with CAD and ultrasound results showed 6 o'clock calcification was unchanged, but a new mass was first seen on my left breast on 9 o'clock position, which was a 0.8x0.3.x0.9 cm irregular hypoechoice mass. It was on Bi-rads 4 suspicious. I then had ultrasound guided core needle biopsy on Jan. 21 2015. Now I just received my core needle biopsy report: "pathology from the left breast ultrasound-guided biopsy shows sclerosing adenosis and focal stromal hyalinization. No atypical or malignancy was seen." My questions are, What does it mean of my biopsy report? How many percentage will it turn to be a cancer in the future? Does it better be removed? Will this mass or tumor go away by itself? Does the mass come because of the fertility drugs? I still have 3 frozen embryos waiting for me and by that time I will take many fertility drugs. Will these drugs make the mass turn to be a cancer? Any pro and con if the mass be removed or not removed? Will fluid cyst turn to solid mass? I am soworried because I don't want it become a cancer during my pregnancy or IVF process. I did lots of online search and I cloudn't find answers. I appreciate any suggestions or thoughts. I feel no one can talk to or discuses with my situation. Please give me any words if you can. By the way, I don't have family history of breast cancer. Thank you.