Hi Nolan and welcome.
I am very sorry to hear of your sister's passing. Of course this can be a trigger for health anxiety...know that you are not alone with this experience.
Have you tried either medication or therapy to manage the issue? I know you mentioned you don't have coverage at this time, but you may want to consider these options as part of your recovery plan once your insurance kicks in.
For now, please check out our Resources at the top of the main forum page here for great material to work with right away. We even have links specifically for health anxiety...as well as general Stress Relieving Exercises.
Also, try to avoid taking your BP at this time. With your heightened sense of anxiety...repeated testing will only drive those numbers up...perpetuating your worries. Remember most people only get theirs checked every 6 months to a year, not daily...and yes, there are times of fluctuations in there that are harmless.
Keep posting with us as well if you find it helpful. We care, understand and support is key!
Talk soon,
Scaredy Cat