Been TTC last 7 months for a second baby. My periods are irregular and I have difficulty tracking ovulation. Last Tuesday I had a spot of blood that I though was my period starting and 3 days after pink/light red discharge after wiping. Nothing on a pad. I have done tests since the discharge stopped it's been 3 days since then. I have been getting a mixture of Negatives( using clear and simple and first response) and very very faint positives (Using one step) I have had lower back pain, sensitive breasts and been eating alot more than usual. How long did it take for anyone else to get a positive? When would it be best for me to test with first response? I didn't experience implantation bleeding with first born.