intro and awaiting stereotactic biopsy results

hi everyone, i'm new here. i'm 34 years old and just had a stereotactic biopsy yesterday. i'm anxiously awaiting results.

i think i'm driving my husband crazy talking about all the what-if's and possible outcomes, so i thought it might be helpful for me to join this site and write out everything here where others can relate.

some background: family history of breast cancer on my dads side. i had my second ever mammogram last week followed by an ultrasound. the mammogram had a new asymmetry finding on the right side (BIRADS 4), from the report --

The breasts are heterogeneously dense, which may obscure small masses.
Multiple diagnostic views of both breasts were performed. New asymmetry in the outer posterior right breast on the craniocaudal view persists with spot compression measuring approximately 12 mm. No definite correlate identified on the mediolateral oblique spot compression or 90 degree lateral views.

Impression/recommendation:
1. New persistent 12 mm asymmetry in the outer posterior right breast
seen only on the craniocaudal view, without sonographic correlate.
Stereotactic biopsy of the right breast recommended for further
evaluation.
2. No mammographic evidence of malignancy in the left breast.
3. Probably benign finding in the left breast at 3:00, 1 cm from the
nipple as described, likely small bowel, located cyst or intramammary
lymph node. Short interval follow-up ultrasound recommended in 6
months, pending pathology from a stereotactic biopsy.

the radiologist wouldn't give me much info, either positive or negative -- the most she would say is that it is not a cyst. there doesn't seem to be much info out there on asymmetry on one view/only on cc view and does not appear on ultrasound. does anyone have any thoughts or experience with this? i've seen a couple things that might point in the direction of ILC. i know nobody out there knows the definite answer but i can't help but speculate while awaiting results

thanks for listening!

***UPDATE 9/3/16:

Just wanted to update: I decided to get a second opinion/find a breast specialist I like to follow me. The new dr felt that because I have such dense tissue and a family history, I should do an MRI. A couple days after the MRI, I received a call from the nurse, saying something was found and they want to do an ultrasound to get a better look. I just had a mammo and ultrasound when this all started in July and this new finding was not in the reports from either of those. I am scheduled for an ultrasound early this week, but in the meantime, does anyone have an opinion on the following MRI report? --

BREAST(S): scattered fibroglandular tissue with mild to moderate parenchymal enhancement on the right and minimal parenchymal enhancement
on the left. Right upper inner quadrant 0.7 cm enhancing round mass with possible internal nonenhancing septation and less likely clumped nonmass
enhancement, located in the mid third depth at the 1:00 axis, approximately 3.0 cm from the nipple. Right upper outer quadrant 10:00 axis posterior depth susceptibility artifact represents the biopsy clip with no associated abnormal enhancement.
No suspicious findings are present in the left breast.

IMPRESSION:
Right breast upper inner quadrant enhancement possibly benign (fibroadenoma vs PASH). Targeted ultrasound is recommended to document benignity.

BI-RADS 0: Incomplete; needs additional imaging evaluation.

The finding(s) and mild to moderate perenchymal enhacement on the right + dense breasts + family history makes me nervous (along with BIRADS 0..??) I am also somewhat skeptical on this latest finding coming up on ultrasound when it wasn't there before (and neither was the PASH).