Thanks for the query.
I understand your concern.
According to your description the cyst you mentioned could be bartholin cyst at the opening of vagina or gartner's cyst inside the vagina.
As 3×4 cms cyst can lead to complications like formation of abscess in case of secondary infection, difficult intercourse etc.
So, better to follow your doctor's advice.
Usually surgery for this type of cyst will be a minor procedure with speedy recovery.
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