Very confused

Okay well I did a homemade pregnancy test just for the fun of it really.... I am 5 days late on my period . I get cramps in the mornings when I wake up and at night. Sometimes during the day I'll get a sharp pain in my left pelvic area. I did the homemade test with toothpaste and my urine. It says if it turns blue or has bubbles around it it's a positive. It had a few bubbles . Can someone give me there opinion ? Please and thank you