I feel swollen down there too but its only painful after sex. Im almost 33 weeks though. I don't remember feeling swollen at 18 weeks. Could be a yeast infection, those are very unpleasant.
I had some at 15 weeks, confirmed by the dr. It didn't go away immediately but after a couple days it stopped... Good luck, they suck
I drank a bottle of Gatorade and that helped. My back still hurts but the "contractions" have stopped. I am not sure about being swollen there but I do have pressure sometimes.
Try breathing through your nose and out of your mouth slowly. That helps me
Id say its braxton hicks contractions drink some water it should go away my doc said down a whole bottle and see if I feel better. I'm 18 weeks and down there feels swollen is that normal?