Any suggestions?!

Brittany
Today I am 13DPO, AF was suppose to come today... she's a no show so far (usually would get it first thing in the morning).  It I have had spotting all week long. I looked up implantation bleeping and it says it could last days, but it's literally almost lasted a week. 
On another note, woke up with a headache, HUGE boobs that won't fit in my bras, no acne (which I breakout a lot before during and after AF), nauseous (not sure if it could be from this headache), and my eyes are really sensitive. 
I have had 3 negative tests all week.