Faint lines yesterday.. 8 days late

I can't seem to get a strong line on a test. I'm super late. I'm never ever late. 8 days now.. now today I was so nauseous on my way to work I thought I was going to have to pull over and now I have sharp gas pains low in my stomach near where my cramps should be. I feel like I have the signs but I can't get a positive. What do you girls recommend? Ugh!