Blood pressure

I am 34 weeks pregnant at 3 days , i was eating and started getting a tight stomach i couldnt even sit up straight or stand it was uncomfortable, after i ate i started feeling so weak it was hard for me to breathe i waited 1 hr to nap and i tried to lay on both sides i couldnt breathe i all of a sudden fell asleep , i woke up feeling the same way checked my BP , is this normal?