Ovulation test

Hi, wondering if anyone has any input. My period is a week late. I’ve taken several pregnancy tests but all of them have came out negative. Is it too soon to test? and today I took a ovulation test and the C was dark and T was faint. I’ve hear that this can detect early pregnancy because you may not have enough hCg to test positive. What do you guys think? I’ve been extremely emotional and I’ve this morning I got sick.. any thoughts on this???