I do wonder if your gp is upping the Ramipril dose to protect your kidneys, bp drugs like Ramipril are often given to diabetics to help prevent kidney disease and to treat it once it progresses, they are called Ace Inhibitors and if you google this you will find some good explanations on how they work,
I'm sure once you start using the gym and pool again and lose some weight you will notice a big difference in your bp readings, if you feel unwell on the higher dose of Ramipril mention it to your gp.