
Hello Lisa,
160/100 is not that high so you will not have a stroke, tell me how old are you? age is important too. I'm not my doctor but all my family have High Blood Pressure, my uncle's reading is 180/130 to 160/110 and he just doesn't care about it and he forget to take his medicine.
My point is that he's 58 years old and he haven't a stroke YET although that his blood pressure is very high and for a long time too. So I guess you don't have to worry because when you worry more your blood pressure will be increased more.
When I was 17 I was measuring my blood pressure 10 times daily (maybe more) and my doctor told me to stop this because my blood pressure will not go down if I keep doing so.
About Diavon, people are different and as I have seen in this forums and others some people with a blood pressure of 160/110 takes one Med and after a few days their blood pressure is 130/90 and others take 3 Meds to achieve the same results. For me I take Atacand 8 mg (an ARB like Diavon) and my blood pressure is fine so I think you have to tell your doctor that your blood pressure is 140/90 so he may add some other Med to Diavon or change it.
Also execrise and losing weight will help you IF YOU TAKE THE MEDICATION. I will tell you something but I'm not sure of it yet, when I take my Atacand while I'm execrising most days of the week my blood pressure drops to 120/80 or even less than that. As I said I'm not a doctor but I tell you what I have been through.
Oh by the way, I heard that stress can make your blood pressure vary as your readings are different in a few hours so try to listen to classic music. I'm happy that you are taking Flaxseed and White Germ because I like those stuff too

and also I take 900 mg of Garlic Powder which is very very useful as I can see.
I took Zaic which is a Beta-Blocker (took it off few weeks ago) which made my hands very cold and when I started the Garlic I felt that my hands are very warm so I will never stop Garlic

.
Good Luck and keep us posted with your readings
Michael