What is this? 24 weeks preg!

Jessica

I pee this sometimes in the morning or even sometimes if I hold my pee to long but this time I wouldn’t say I held my pee.. I’m confused. Before I brought this up I had a ultrasound and she was good then when I told them I had my pee tested and everything was normal. Its just like flaky floaty things. Not red or anything I’d say maybe brown but not really idk. Plz help