Signs of early pregnancy

Caitlyn • 22, Canadian. 2nd baby girl coming in March! Lovely husband. Lovely daughter. Lovely life. 🙏🏻
I know I can easily Google this but I'd like to hear from you guys! Is airy cramps and gassiness and early sign of pregnancy? I'm supposed to get my period today and not feeling it coming but I am crampy (air cramps) and gassy. Could that possibly be a sign I may be pregnant?
Also: me and my husband had unprotected sex on my highest chance day