Normal??

To give some background I recently got off my birth control on January 13th. I had my period January 16th-19th. We are trying to conceive for the first time. I am now 8 days late. I took a pregnancy test on February 12th and was negative and I also just took one yesterday morning and it was negative. Is this normal? Could I be pregnant and it’s just not showing on the test yet??? Please help!