Please please help!

I apologize this might get long! The month of November I haven't taken my birth control. I've been on it for about 5-6 years. A few times this month my SO has finished inside of me. I took a blue dye test last Wednesday and it was positive. Took one Thursday morning and it was negative. Still a blue dye because that's all I can get right now. I left it and still haven't gotten my period. Just took one and got this! I know blue tests aren't the best but it's all I can get right now! Has this ever happened to anyone? Thank you in advance!