Nacht, have you done your homework on the food pantries, thrift stores, and the like. We have a "Soup Kitchen" run here in my town. Another place is a St, Vincent DePaul facility or Salvation Army or a "Y". I used some of these until the paperwork went through on my Food Stamp allocation. Check with your county's social services. Most will lead you in the right direction.
While leaning on this type of help is not easy, it does take some emotional pressure of you so you can deal with your BP more effectively.
Keep me posted. Send me a PM if you want. Hang in there, I know you can do it.

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Remember, no matter how many times you go down ... come up for air!