I feel like this is science!

I never would've thought there would be so much that goes into getting pregnant! with my first child, my husband & I did the dirty deed twice & BAM! pregnant outta nowhere! but now the second time around, did the same thing & results were negative. I only found out recently that it seems like there's so much more to it than having sex, i.e. bbt, cervical fluid, how high the cervix is...so on & so forth. I recently started using OPKs & was getting a little discouraged after each use...until now! according to instructions ('cause I'm a noob at this) I guess it means I'm ovulating! fingers crossed & a million prayers that we can give our daughter a baby brother or sister!