I know it’s not amniotic fluid because I’m not constantly leaking.

When I go pee, it smells sweet like maple syrup immediately. Is this something I should be concerned about? 31 weeks, my gestational diabetes test was normal, it doesn’t hurt or burn to pee, I’m not having unusual discharge or anything. It just caught my attention the past 2 days. Anyone else with something similar? I have an appt in 2 weeks, should I wait or call in?