I actually feel like I’m gonna cry

I’ve had my period on point every month and it’s always started when its supposed too and always finished when it’s supposed to

I was supposed to start this month 15th till the 19th and I’ve not started at all

I’ve took pregnancy test after pregnancy test using clear blue normal and digital, and the brand ANSWER one stop test (pink dye)

Ive had pink lines come up after the time frame which I’m aware is invalid.

I’ve just took another one ABSOLUTELY NOTHING

I had sex the 26th of November (unprotected)

I started ovulating on the 27th

Supposed to start period 15th (Oct)

I’m just confused why I’m late... I’m not stressed at all I’ve never been late I’ve always been on time!

I’m at wits end it’s confusing me and my partner and with us not knowing what’s going on it’s making us fall out

I called doctors up this morning they said test in another two days if not come in and we will do a test

BUT SURELY IF I WAS PREGNANT IT WOULD COME UP BY NOW

Please help me it’s making me really down