Could I be pregnant?

Ash
I ovulated on the 16th this month and had unprotected sex on the 15th and he ejaculated inside me.
​I'm now 8dpo and have 6 days till my next period...I've had lots of creamy,thick white CM..when normally I'm dry before AF arrives
​Plus I've had some headaches,backaches,heartburn,cramps,crazy vivid dreams and last night while out shopping with my boyfriend I actually said ouch out loud because of a pinching pain in my lower stomach on the right
​Is it possible I'm pregnant?