Hi Lucy
Drinking definitely raised my BP - to dangerous levels - but it came back down to normal after I quit drinking, smoking, and not doing much in the way of exercise.
Noone here can tell you what might happen or not happen in your case tho, so it's a really good idea to get checked out by a Dr - and I'd do it as soon as possible.
I know it's scary but why wait? - get checked out and you can set your mind at ease
D