So I had the mirena inserted on day 3 of period. I had sex on day 6 but made him pull out way before ejaculation. I took ovulation test on day 13 and it looked positive. not sure if I ovulated that day or on day 14 or 15. anyway today I got a spot of red blood that looked like implantation bleeding I had two other times I was pregnant. I am so terrified . I can't be pregnant ..