two days late

Im two days late😰
I had unprotected sex I don't think he came inside me but I'm two days late and I feel like I need to puke my head hurts and my stomach hurts and I can smell everything really good and sometimes I'm not even hungry and then I am but everything grosses me out 😰😰😰 also I been really emotional ... I cry for everything 
Im scared help 
HELP?