Hello. I'm late on my period but my body is telling me it'll be sometime soon. I have a huge meeting this weekend and need to wear tight, light grey pants. How do I prevent leaks or panty lines if I don't use tampons?

The most efficient way is to wear a tampon and panty liner and you can get ones for thongs so that will deal with the VPL :D

Unfortunately, you might have to wear a tampon. One time I was working at the Home Show, and I had to wear tight white dress pants when I was on my period. I knew that my only option was to wear a tampon. I don't like tampons either but I had no choice. Sorry but that's all I can think of.

Wear a pair of pantyhose with a cotton crotch, you can use a pad and have no panty lines. Find the slimmest pad you can and change often. You don't want one that's thick like a diaper ;*)
Ber