Blood pressure/Heart Rate

Kelsey • Kelsey. Married. 20. Gave birth to my first child July 3, 2016
Since about week 12 of pregnancy (I'm 17 now) anytime I eat salty food I start feeling light headed, like my heart is pounding, just feel bad for a while. I've been monitoring my blood pressure it seems a little elivated but my pulse has been 106-120. Is this normal???