Positive OPK?

Sarah
I posted a couple of days ago about this being my first time <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a>. I am using Wondfo to do so. I took this test around 11:20 a.m. with 2nd MU. (Snapped the picture within first 5 min). I'm pretty sure it's positive, but would like some feedback. I am on CD 17, with a regular 35 day cycle. Glow tells me this is my first first fertile day. What do you think? Positive or no? If it is, how soon should we BD? Thanks!!!!