Go to a Dr.! I had a similar issue. I was about 30# overweight, and was struggling to keep a failing business afloat. Stress was off the charts (bp was 160/120). One day while sitting at my desk, I had a strange sensation come over me and I developed double vision.
Long story short, my BP was through the roof. I got lucky and didn't actually stroke out. Dr. put me on meds that got the bp down. Since then, I've dropped 40+ pounds through exercise, I eat better, and I am about to wean myself off the last bit of bp medicine. In July I summited Longs Peak with my son. This spring I am going to run my first half-marathon.
My best advice is to see a Dr. to address the immediate concern, but unless you rid yourself of the stress, you will always be at risk with no chance of getting off meds.
I know it's easier said than done, but once I finally succumbed and close the business and relieved myself of the stress, my whole world changed. In hindsight, it was clearly the best decision, but at the time it was hard to do.
Hope this helps!