Advice, comfort; long story

My relationship ended because of the distance. It was a good, clean, mutual break up but it still hurts like hell. We decided we're still going to be friends and see where it goes, but we got into our first fight the other night that got pretty nasty. I apologized for my actions the next day and he told me that it that was okay, to not worry about it, and that he understood. We were supposed to talk it over more the next day but we haven't. We both think we need a break or some space, but it's so hard considering he's one of my main support systems and a good friend overall. 

I've been researching biopsies and the different kinds and everything and just haven't really been finding what I want. I'm scared even though I know that it could be nothing. I didn't even know what a mass was until I looked it up and saw that it's basically the equivalent to a tumor? I just want to know what a biopsy does and what the most likely outcome is and how long it takes to wait based on what women here say (don't trust some articles online). I'm scared for my mom and it also kills me to know that my dad is depressed and doing so much running around for her and our family. 

I've been finding that I don't enjoy a lot of activities that I normally would anymore and it takes me a while to reply and respond to friends I talk to on daily bases. I just don't want to be a heavy burden to my friends with both of what's going on in my life.  I feel like I'm depressed and my anxiety is at an all time high. I feel lost and confused and just need some kind advice or words.