I've had this big bump on labia . Should I be worried?

I've been having this bump for a while now. it doesn't hurt or nothing similar. after wearing tight panties or pants,it get biggest, as Well as after sex sometimes. but it gets back to this size shortly. have any idea what it is? im kinda scared a lot!! :((

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Hi, this looks like a Bartholin’s cyst.

Yeah I agree it looks like a cyst.

hi, thanks!
is it possible to have it on both sides at the same time?

It’s not frequent but it’s possible since you have Bartholin’s glands on both side.

It seems to have blood inside it. It could be infectious but that depends on what your doctor says. It could be just blood form inside the labia.

hi! thanks for the comment.
what do you think could have caused it?
any clue how to treat it?