ovulation

Rebecca

need some advice I'm on day 16, Sunday i had a near positive, but then negatives every other day. today my temp tipped low but then just done an opk and it's near positive again?! do you think I'm gonna ovulate today or tomorrow? this is my second month ttc. last month I ovulated on day 16. got my positive on day 15... worrying now I'm not going to ovulate.