pregnancy symptoms

I currently believe I am pregnant because I have all the symptoms. Fatigue (to the max), I can't eat or smell certain things without vomiting, my breast are so sore & im peeing literally all day & all night. I've had 2 previous miscarriages so I'm pretty sure how my body reacts when I'm pregnant. I have gotten 1 positive (very faint) and 4 negatives. Any suggestions on what may be going on?