Why does your pee sting only at period time?

What do dried leaves symbolize? What to write in an employee performance appraisal? Are round worms tiny and hard to see? What is the best way to get rid of red lily beetles? How can you control the bacteria bacillus thuringiensis? Settings of the beetle by consorcio borje? Is a mollusk a ectotherm or endotherm? Are ladybugs consumers or decomposers? Is it normal for your bee sting to be swell after a week? What are shelled nuts? Do obsters have antennae? What are tiny black insects looking like specs of soot with six legs segmented body two antennae and microscopic white hairs all over its body that appeared on my window sill this winter? Do mice eat cockroaches? Do male cockroaches eat their babies? Is praying mantis capitalized? What is the diet of a firefly? Do katydid's sting? How long does it take for a silkworm to make a cacoon? Do locusts have ears on the back legs? How long do stick and pokes last?

Why does your pee sting only at period time?