Get a peri bottle to squeeze over your bits as you try and wee to relieve some tension and try to relax and lean back as much as you can. Same thing happened to me 😩 the leaning back and closing my eyes and deep breathing to relax helped and once the floodgates opened I was fine! Good luck 🤞🏻
All that helped me was just drinking soooooo much as much as you can I'm sorry I can't be more helpful x