Possible implantation???

Charma
Okay so 7-8 days after unprotected sex with SO and ovulating I woke up super sick. I was very nauseous all day with achy muscles and chills...Sunday I woke up and I was completely fine. SO thinks that it was 90% implantation symptoms and that I am more than likely pregnant. Should take a PT and when? Am I just getting my hopes up???