What could have caused you to suddenly have a red bump on your vaginal area that appeared shortly after your period?

This is perfectly normal and is caused by irritation or a dry vagina. In some cases it can also be caused by a vaginal cyst in one of the hair follicles. If the bump doesn't disappear in 2 weeks, see your Doctor. Otherwise apply vaginal cream for Yeast infection from your Pharmacist, and no scratching or the lump will increase in size. T x