Help me

Patient: I had my period on jan 13, had unprotected sex n took plan b. On jan 28 i had what it looked like my period again. After that week had un protected sex and took plsn b again. Until this date we keep having unprotected sex. Sincr the 28 i havent gotten my petiod. I been feeling very weird. Its been like three weeks already, am i pregnant?

Doctor: