i think it can be quite normal to get swelling, even if you dont have PE. i would think that you would have more symtoms such as headaches, blurry/starry vision, upper abdo pain, high b pressure etc. but it cant hurt to go see a GP and get your bp checked. i probably would, just to put my mind at ease.

other than that, drink heaps of water, it can help with swelling and rest as much as possible. try and stick to the lounge/ bed for as much of the day as possible.

sounds like the lower abdo pains you are having after going to the toilet are braxton hicks.. i usually get most of mine after going to the loo.