Is this normal? Please help

Jessica

About two weeks ago I had some spotting for two days (never since having a period have I spotted) so I was concerned. Also experienced some nausea and tiredness, I figured I should take a pregnancy test. So last Thursday I took one at the doctor and it was negative but they made me come back and take another urine and blood test today anyway.. is that normal? Has it ever happened to anyone else? Please help I’m so confused. I also have yet to have my period.