is this normal?

Heyya! 38.2 weeks here and last night my husband and I went to the movies. It was a little warm in there, but my feet and fingers swelled so badly. I've never had that before. Today I feel strange. Disoriented a bit, I keep breaking out in a sweat even though I don't feel that warm, and my fingers are still swollen (but not my feet). I don't want to harass my OB if it's nothing, as baby is moving and has been throughout the day (though she has been lazy). I just wanted to know if this is a normal late pregnancy thing or should I be concerned? 
Also: google tells me it's my blood pressure, but my blood pressure throughout my pregnancy has been exemplary.