I Am 55 And Weigh 130 And 5' 1" Tall.

I am 55 and weigh 130 and 5' 1" tall. My blood pressure can get high from time to time kind of randomly I'd say. I go for my yearly check ups and I have never been put on any kinds of mess for my BP. I really am healthy and don't take any prescribed health Meds. I've had a bad cough since Sunday. and as of last evening I started taking musinex DM But BP has been pretty high consistently over these past 48 hours. We have a BP monitor here at our home so I've checked it regularly and I'm laying down now and have really taken it easy these past couple days but I just checked it and it's 168 over 110. I'm not sure weather I should consider that as an emergency and head to the ER or just see if it will go down. I don't have the nausea or headache as indicates in symptoms for an emergency so just not sure what to do.