advice needed girls!

Katie
Hey ladies! I've noticed I have some higher back pain almost on my spine and boob pain. My boobs aren't tender they just throb sometimes almost like a growth pain. Sometimes I feel sick but as soon as I eat I feel great again. Any ideas? I had my period a week ago. I've been stressing a lot latley too. I ended up with a stress rash on my shoulder. I'm just looking for some advice to help calm my nerves a bit.