Hi ToriJo. I'm glad you may now have resolution for this.
I will just add that throughout my entire life (as a guy) I found that I could produce more pee when standing up than when sitting down. As a result, as a guy if I sat down to poo and pee, I would always stand up at the end (facing the toilet of course) and do one last pee to 'empty out' my bladder, so to speak.
Interestingly, having just had my GRS (2 weeks ago), I still find that it is easier for me to pee standing up than sitting down. Now I obviously can't pee facing the toilet! So, instead I stand facing away from the toilet and crouch down just enough to enable the flow to avoid the floor and hit the toilet bowl. It took a bit of practice because my pee is currently is not a focused stream but is dribbling off my labia mayora in several places (due to swelling, hopefully, which will reduce in time), so it's a bit like Niagara Falls! But I succeed 98% of the time, which is good enough.
By the way, I also found as a guy that peeing was always more successful after emptying my colon of poo. And this is still the case now, post-op; poo present in my colon seems to prevent me from peeing.
Of course, these things might be peculiar to me, but I thought they were worth sharing.
Daniella