My partner and I had sex the day before my period started and my period only lasted 6 days

Usually it only lasts 3-4. Could implantation have occurred during this time? It's been exactly 2 weeks and 2 days since we had sex. I've had this pelvic pressure/pulling in my left pelvic region and left side of belly button. Also gurgles in lower abdomen.. mood swings and hunger.

Could I be pregnant!?!?