Cramps but no AF

Dainara • 6.06.17👰🏼🤵🏼 TTC baby #1

So last night I swore I was gonna start AF due to cramps. But AF never came?? Didn’t bleed anything at all!?? I feel perfectly fine today but still waiting on AF. Could that possibly be implantation? Usually when I cramp like that I bleed right then. Boobs are slightly sore but that’s it!