finding out I have high blood pressure😧😧

So today I went to my 2nd appointment..everything was good with my baby heard heart beat at 150 and I was looking good but my OB was concerned with my blood pressure at 147..I never heard my doctors saying this to me so it made me supper scared but I was thinking of stuff I ate the night before which was pickles..very high in salt..so now I have get blood pressure machine to watch it..mommys that went thru this what did you do? What you eat? Also, I try do balanced diet with good and bad food. But please help😊😊. Thank you!