If the swelling has suddenly come on and if it's accompanied by a headache across your forehead go in, I didn't get high blood pressure until my 38th week and always had swelling on the right foot, suddenly it got worse and the swelling was on my left foot as well as going up half way up my calf's.
If you are really concerned I would go in, the Dr's are there for a reason.
Good luck hun!
Sounds like normal pregnancy symptoms to me. Put your feet up and ice your back.
I would call the on call nurse just to be on the safe side!! Good luck