Could I have Anemia?

Patient: Hi I’m Lauren and I’m 15. I’ve been noticing that I’m really really sleepy he I come home from school. I use to play soccer but my mom told me to quit cause I grew two bruises on my back out of no where. The bruises have been making me weak and sleepy. I’m always getting headaches I’m always dizzy and I lose my breathe really fast. And after I excersice just for a little while, I can feel my heart beating faster and faster. My sister had or sill has anemia an I was wondering if maybe I could have it too?