Hello, i can totally understand where you are coming from, i'm in the same position, i had my last perod on 22 Dec and was due 16th Jan, no period as yet. I have also done three home tests and all were
negative.
I'm just back from the doctors whos tests also came negative, but she said my symptoms sounded pregnant??? I've gotta go back next week if still no period!

Would like to hear how you get on. Good luck