Can someone ease my mind as I await my doctors appointment ?

I have an appointment scheduled in a week but I’m just really worried because I’ve never felt like this before. 

I have this pain where my liver or gallbladder is. I had this a few months ago and they said it was constipation so I used laxatives which helped. But now it’s back and laxatives didn’t help. I’m constantly tired no matter what I do, I’m peeing more often, I’m dizzy and get headaches, it’s very hard to breathe almost all the time, and sometimes my heart feels weird (like skipping beats or beating insanely fast at times)

I’m worried about what’s going on and I won’t get answers for an entire week.