I can’t feel my bicycle seat area

I’m a 29 year old male, 5’11 and 185 pounds Nothing interesting in my medical history.

Part way through the day today I started getting a tingly/numb feeling in my butt. It’s spread to the whole area that would be in contact with the seat of a bike if I was riding one. It’s beginning to radiate a bit down my legs and it’s hard to initiate urine. I’m not feeling any pain but wondering if I pinched a nerve or this is just part of getting old. Heat? Ice? Ibuprofen? It’s incredibly uncomfortable and I don’t want to make it worse.