3 days late!

So ladies I'm 3 days late as of today, sore boobs, Creamy Sticky CM, Cramps, and I get nauseous really early in the morning.. But I am debating on testing I don't know if I'm just overthinking! Something in the back of my mind is telling me I'm pregnant but then again I keep doubting myself! I was due to start AF on the 29th of December.