Ok ladies. Today is 6dpo for me or atleast I thought. Since ovulation I've been tired cranky sore nips nauseas can smell everything under the sun and mood swings. For giggles this am I took an opk and it was blazing positive. So I got a bit excited and took.an ic. Negative. Is it too early for hcg to be detected still, did I not o a week ans half ago or is it the lh surge before af( she's not due til may 31).