Myth or real

Okay so I didn't have my period last month but I took a prego test it said negative but when I did the whole bleach test it bubbled over super bad and when I did the pine sol test it didn't mix at all I've heard of it changing the color if prego but if it doesn't mix does that mean I'm not prego?? I'm on the iud also... I can't get in to see my doc for about a month. So any advice would help thanks.