Got my period, two negative test, and still think I could be pregnant?

Patient: I had unprotected sex but no ejaculation happened. i got my period around its normal time (oct3). I still felt strange after my period even though it was normal in all ways so in the last 24 hours i have taken two (clearblue) at home pregnancy test both came out negative. is this all in my head or could i be pregnant?

Doctor: