let's go egg/s

So i had a pretty much positive ovulation test (opk) on Christmas...next day it was stark white and my temperature didn't rise.  Then i had a pretty much positive opk yesterday at noon but then at 6pm it was much lighter.  Today i went for an ultrasound and i have a 19mm follicle and a 16mm follicle.  Since i am getting late in my cycle she gave me an RX for an ovridel trigger shot.  I came home and took another opk and this one too is pretty much positive.  It's funny bc the left half of the line is positive but the whole thing isn't (this is how all 3 have been).  Now, do i take the shot or assume i am ovulating on my own?  Sigh.

Hopefully, either way, i will be ovulating tomorrow...which means i can test in about 2 weeks.  Fingers crossed.