Help. 1st time using ovulation tests.

Vanessa

Ok y'all i am so confused. This is the 1st time using ovulation tests. Last month we had 3 positives and then slow fainting of the line and gone. So 2 days ago took my first test and it was low. I take another last night and was flashing. I know everyone is different but has this happened to anyone? Could the test be wrong?