What problems could arise when too many people living in a small area?

Depending on the time frame and circumstances... a big one would be limited resources. People need to eat and need a lot of space to grow and maintain their own resources or be able to import all they need with a very healthy economy. Also any kind of health issues or epidemics would spread much quicker in a small area with a dense population. Those are just a couple off the top of my head.

There are a couple of answers.you could have an infection, a sti, std, or other problematic health issues.i would recommend going to the doctors, if not, take a shower and wash down there, then wait a couple of days, and if it’s still there, then is when you should go to the nearest or trusted gynecologist of your choice.