I just want answers 😞

Jodie
Last month - I was 7 days late on my period, I have always been dead on or a day late. I had boob pains for the first time ever, headaches, butterflies. And I had my period. 
This month - I'm now 4 days late and I have sore and itchy boobs, I've had slight cramps on and off, yesterday and today (only once per day) I have wiped and had the slightest pink smudge. Then it's gone when I wipe again. I've been feeling sick for the past week every morning then on and off throughout the day. 
But all tests say negative - what is going on?