Can I be PREGRANT

Okay ladies so early this month on new years night me and my partner had unprotected sex.. Everything was fine until day two.. I started to began to experience nausea and my breast became sore throughout the day with a combination of fatigue ! Relieved my period came maybe a few days after that but the day before me and my partner had unprotected sex again. So I thought it was just PMS and I brushed it off but the symptoms of nausea (without vomiting) and breast tenderness stayed. Every morning I wake up like “yes the feeling went away" but then hit comes like BOOM 😥 please help me ladies I need answers and if you ever went through this pale leave a comment  with what happened after ! Thanks I'm advance