I'm not sure how high it would have to be, but definitely something to get checked out even if it is nothing. Swelling is a big sign of preeclampsia and is very serious and dangerous to both baby and mommy.
Anything over 140/90 is considered high blood pressure in pregnancy. But don't mess around with this, like I said it could be pretty serious. Go get checked ASAP.
How high would my blood pressure have to be to get this i normally run 100/60 my last visit was 130 something over 78ish cant really remember
Swelling on just one side could be a sign of preaclampsia, which is pretty serious. Call your OB and go to the hospital, have them check your blood pressure.