I'm not sure what you mean by vaginal dryness around the clit and labia. Is your vagina dry? Or are you saying that your lubrication or wetness is not extending up to your clitoris and labia? Not sure it is supposed to. Are you saying you aren't as wet as you used to be? Could you be less excited by the guy you are with? Perhaps artificial lubrication would help. Swelling is from friction and this can happen when yes, we do not have enough lubrication. Please make sure to use condoms to protect yourself!