Birth control advice

So I’ve been on my BCP for about two years. I’ve never missed a period and AF comes like clockwork every month. Last month on my last week of active pills missed 2 and didn’t double up. Also had unprotected sex those 2 days and 1 day following (not so smart I know) AF or something like her came a week after. Lasted 3 days. I’m currently on cycle day 30. (Usually 28) Negative hpt still no AF. I’ve also been tired, extreme nausea throughout the day and headaches. Struggling if to start my new pack on Sunday or if i should Test again in a few days and then start or don’t start. Idk

TIPS?????