Unless you track ovulation there’s no way to know for sure if you ovulated this cycle or not. Bodies are weird, it’s normal to skip a period sometimes especially if you’re stressed, started new birth control or have lost or gained weight quickly. I’d say the doctor is saying you’ve tested too early for your next expected period not your missed on. At 20 days late as @erincharlieconor, said you’d be getting a positive if you were pregnant.

That's what the doctor said. Xx

The doctor said I was early doing a test xxx

So I'm not pregnant then. The doctor said I did a test to early and People get negative test at 4 weeks missed period xx

How come it coming up negative xxx

When will my next period be xx

I've done that before and come back negative xx

Ok sorry I didn't understand first, didn't have this problem with my first so when should my next period be xx

Just did a test come back negative, how does that work 28 days lands on 14th December xx

Yeah 28 xx

Started 11th finished 16th nov Should of had another period 14th December but haven't xx

I've had all the signs of preagancey, sore boobs, and feeling sick discharge tired cramps.
Xx

So I'm not pregnant then xx

15 days late you can’t have tested too early, you could have missed ovulation so miss a period also stress can delay a period xx