Am I pregnant

I am always on time with my period, either 28th or 29th day. But this month I missed my period. It has been 33rd day today. I am also nausea and threw up couple times now this week. My legs are very heavy at times and it makes me very tired. I have minor headache, but I thought it maybe because I stopped drinking coffee and tea. I tested on Monday and it was negative. I called my doctor and the assist said I can test again this Friday.

Do you all think I am pregnant? Should I just test tomorrow?