Bartholin cyst

I think I have a Bartholin Cyst. My labia is quite swollen close to the entrance of my vagina. I can feel it when I walk. Like a rubbing feeling or just something sitting there I guess.

Any advice on how to treat? I am seeing my doctor on Monday but want some ideas in the meantime - especially to prevent it getting worse.

I gave birth 3 weeks ago - could this have caused it?