Both of my children were born at home and unfortunately, I had high blood pressure with both. I was almost transported with my first as I had posterior long labor with my blood pressure skyrocketing.
The thing that helped me the first time was a long bath with epsom salts while in labor and the second time, I was once again becoming toxemic-- long story. Anyway, I had found a wonderful acupunturist/ homeopath that was able to work wonders.
I had walked into his office with rapid pulse and high blood pressure and my midwives saying this is it. If this doesn't work, you are transporting-- and they are fairly liberal--
Well, ten minutes later after some acupuncture and a homeopathic remedy and my pulse and pressure were fine. So, I continued seeing my acupunturist once a week until the birth and took my homeopathic remedy whenever my pressure would start to creep. And you know what? It stayed down for the birth!
Even during another very long posterior birth-- my pressure stayed down and my beautiful baby was born at home-- without any pressure of transporting.
Anyway, yes, all of yours might have been due to the hospital pressure, but definitely look into homeopathy with a reputable homeopath and acupunture, as well. It was good to know that I had this on my side!
Good luck and happy birthing