well it certainly could be a cyst. or it could be half a dozen other things i can think of off the top of my head. our skin is prone to developing many types of weird lumps and bumps. the good news is most of the time these go away on their own. sometimes they burst and emit fluid. other times they just seem to disappear. as long as you do not develop a fever or an angry hot red rash in the area it's probably ok to take a wait-and-see attitude with this bump at your bikini line. you can put some warm compresses on it to see if that helps "draw out" any exudate (gunk) from the cyst (or whatever it is). do not squeeze or puncture the bump in an attempt to drain it. that is a great way to get an infection. instead just monitor the lump. if it bursts on its own that's fine -- put some antibiotic ointment on the wound (assuming you're not allergic to antibiotic ointment) and cover it with an adhesive bandage. do that for a couple of days or until the wound has finished draining. in the unlikely event you develop a fever an angry rash in the area or if the bump doesn't go away within a couple of weeks then get a medical professional to look at it. wishing you well!
how do you tell the difference between a cyst and something else? . i found a nickel sized lump on my bikini line that hurts and is solid with a little give at the touch like cysts i've had before do but the skin above it is redish and looks bruised. is it possible it's something more like a tumor or just a cyst that caused a bruise when forming?