Implantation cramping???

I’m 4 days away from my expected period and am experiencing cramping with some nausea and fatigue. My husband and I had sex the day before and the day after my ovulation. Could these all be early signs of pregnancy? Has anyone else ever experienced implantation cramping before? I don’t remember have any when I was pregnant with my daughter but I did have some light spotting with her. Iv never cramped this far before my period and my periods are pretty regular. Just curious if anyone else has experienced this and what it could mean. Fingers crossed for pregnancy 🤞🏼