HELP!??😰🤔

Billie
I had sex on my last fertile days (Friday 19th February 2016) it said 15% chance. It's been almost 2 weeks which would be the full length of conceiving, I haven't taken a pregnancy test yet as I thought it would've been too early, I have one booked on Thursday afternoon with a couple of sexual health nurses, I've been feeling tired, I haven't physically been sick but I've had sick feelings in my belly in the morning, I've been non stop eating n I'm constantly needing a wee!! My boobs/nipples are quite sore n all of a sudden I've recently noticed little spots around my nipple n also no sign of period yet, I'm due on in a few days n I literally have had no cramps of it yet n I always get cramps really bad when I'm due on!! Help?? Any thoughts?? Would be really appreciated!! Thank you!❤️