Is it possible to not get a positive test good in the early 2 months of pregnancy?

I’m just wondering whether you can still be pregnant but get negative tests for a good few works?

I really feel so pregnant, this would be my second pregnancy and I’m feeling so similar to my last. The nausea sickness feeling... I had severe morning sickness with my first (HG) and I can feel me starting to feel the same...

But I’ve done two tests and both negative.

I don’t have a missed period as such to tell

Me either as so irregular due to being 5 months post partum!