I Just Had My Menstrual Period And Probably Wasn't As

I just had my menstrual period and probably wasn't as hygienic as I could have been (wore pad for long amount of time, felt a lot of irritation). I noticed a large red bump on my labia majora, and it hurts when I touch it hard (feels like a pimple). It's been there for about 4 days. There are also hairs that are sticking out in portions of it... Does this sound like herpes? I wasn't sure if it was ingrown hair since I haven't shaved in a over a month.