Pregnancy symptoms

Has anyone had any pregnancy symptoms before missing their period? I’ve had sex within the last 5 days, my period is in 8 days.

I took two Plan Bs (it was necessary) 5 days ago, I feel like complete shit. I have no energy and feel so depressed. I had slight cramping.

I’m sure it’s the Plan Bs but I want to know if it’s possible to have symptoms this early