I'm so confused

I have been trying blindly for the past 9 months to convince with my husband. I just got this app and have learned that you can't ovulate more than once a month. I understand this. This Month I have tested every few days, usually closer to every two. Except for when I was supposed to ovulate which I tested every day and watched my LH surge drop and fall. Well two days ago it was faint which I've read is normal. However today I tested and I had a positive LH surge again. Does that mean I'm at risk for having fraternal twins?