Thanks ladies this is all something new to me
Drink plenty of water and put your feet up. Call your doctor immediately. They may send you to L&D for monitoring.
It may just be that you need rest or you're dehydrated but it is always better to check with the professionals. Why put yourself or baby at risk. Hope all works out to be okay.
Call your doctor asap. Could be signs of preeclampsia; high bp, swelling, visual disturbances, headaches etc. I was just in hospital overnight being monitored for it.