Symptoms of Pregnancy?

I am 8 days past ovulation. I am expecting my period on Tuesday of next week.
My fiancé and I have been trying to conceive. I have a few symptoms that make me wonder if this is our time. I have been having slight nausea for the last couple of days, also last night my legs started cramping up sitting on the coach. When I elevated them on the ottoman, they felt fine. I also felt slight cramping a couple of nights ago, I am thinking it could be implantation cramping, but I am not sure.. I just know that it wasn’t serious cramps. Also couple of days ago, my fiance told me that I felt different inside. I heard that this is a sign of pregnancy, what do you all think? These are my only symptoms that I know of.