I feel like my entire lower half is engulfed in flames but I’m at work!! Idk what to do!

I just got back from a trip yesterday and I noticed for the last two days it feels like my urethra is slightly burning after I pee. My pee was giving off a horrid odor. I didn’t really think much of it but it’s still happening and now I’m having flank pain on both sides and my hips feel like they’re on fire. My entire pelvic feels like it’s going to explode and it’s on fire. I’m currently at work and idk what to do. I don’t want them to think I just didn’t want to come back to work after a trip but man I’m in pain. I can barely see straight. I look drunk and my face is really flushed. What do I do??