Hi, I am concern I could be pregnant, my period this month was unusual, It start off normal, than second day it disappears, and than come back light, than stop and come back heavy, and keep doing this for next few days, when I taught my period was over, it came back heavy, than just stop all at once, I am also very tired, my moods little up and down, my breast sensitive, my stomach hurts and I am cramping, off and on, i feel like I am going to throw up, and I also feel little more hungry than usual at times, I am have a hard time staying focusing. I also have acid reflex issues and conscription and asthma issues, I am on meds for it, and seem to be doing until a few weeks ago...