Negative tests but pregnancy symptoms...

Hello, please can someone help!

I strongly believe I am in early stages of pregnancy... this would be my second pregnancy. And it’s only because I’m feeling exactly the same as I did with my first pregnancy. I had a very prominent symptom which was severe morning sickness called hyperemesis gravidarum amongst many other things. I’m just feeling under the weather with the sick feeling I had previously making an appearance ... I think we all know the feeling of morning sickness when we’ve had it because it’s just different to normal sickness.

From what I understand I could potentially be 4 weeks pregnant... I am 5 months post partum so cycles are irregular so I don’t have the ‘missed’ period to help or to know when to test as such?

Anyway I have done two tests since possible conception ... around 2-3 weeks after.

Both negative. But I still feel very abnormal , and is probably getting worst by the days. Especially this sickness feeling.

I’m just looking for some advice or just someone to talk to really because I am worry some.

Was it too early to test?

Do some pregnancy positives not come until later on?

Thank you so much x