Hi all has anyone been though this plz xx

I have had my period since December 24th an I went to gp who done a test she never left it long enough an said it's negative well I still haven't come on I'm being sick in the morning an feel sick bad I didn't find out wiv my son until I was 7+2 my tests keep being negative wiv him till I asked for a scan xx could I be pregnant my vains are showing move on my boobs an when I go to eat everything makes me feel sick so I don't eat it plz can someone help x thank u