20 weeks pregnant spotting

so I'm having very light pinkish blood only when I wipe I have also noticed today that when I go to pee and feel the urge it's alot not much comes out and it burns and kind of itches does this sound like a yeast infection or uti?i just had my anatomy scan today and everything looked good but does this sound like I should go get checked out again tonight or wait for the morning to call my Dr?