Ovulating? HELP?!

So this is my first time using an opk & I have no idea how this works, we’ve been TTC for about a year now & had a miscarriage at 6 weeks in April.. & we were seriously devastated after trying 8 months before that. Thanksgiving day is my due date & I swear it’s coming up so fast. I got a new phone so I had to sync my flow app on here & for some odd reason it switched over to when I was pregnant & said today id be 35 weeks. I’m ready for this month to be our month... so opk & the upboost fertility lets get to working, so here I am just crossing my fingers! so with that being said, I’m guessing 2 lines means positive, but with OPKS I never really understood it just because of how much more complicated it is than a pregnancy test haha! Any advice? So hopefully this is it! I just BD away & now, hoping & praying is all I can do at this point in time!