Feel so sick am I pregnant

On 6dpo I had pains like my period was going to start im not due till 27th then at 10dpo was gagging/heaving like I was gonna be sick and now 12do I'm laying in bed and keep getting sudden waves of nausea and I mean nausea I feel really sick I took test this morning was negative wen should I take another test I think I'm pregnant as has this with my last pregnancy which sadley ended in miscarriage please help me