Pregnant?

Ive lost my birth control package and the last time I took my birth control on the 17th of august.

On the 18th I had sex for the first time than the next day I either got spotting or my

Period but it lasted for two days.

It's been 7 days without birth control and I still haven't gotten my period usually I would of gotten it if I've been off the pill for this long.

My period technically isn't due until the 3rd of September but It's been 6 days since I've had sex I'm starting to get nervous...