Hi, I'm 18 weeks pregnant and have noticed my left labia near my vaginal opening is swollen, and seems to have a smoothe lump under the skin. I can feel its sore from the swelling when I walk but its not unbearable, just making me uncomfortable. This has appeared over 1 day, never had before. I have been tested for stds as routine when pregnant, all clear. I'm just anxious of what it could be, and need some reassurance as my pregnant mind is in overdrive :( thank you. Jazmyn