I had a lovely reassuring phone call with my GP, and she saw me at the surgery an hour later!!!
She thinks that IF I have COPD then it is very mild and IF it progressed in the future, the issues would be minimal. She didn't contradict the nurse who 'diagnosed' me but said, after thoroughly listening to my chest and peak flow results, that she is not worried at this point.
Likewise with my 'high' BP, which was ok when I am at home and when she took it.
I didn't know that diabetics are supposed to have lower bp - under 120/80. Mine was a bit higher, but within the normal non-diabetic range. Just like when I take it at home. So no meds needed. GP said to contact her if I have any future worries.
So after a few weeks of distress, crying most days, and feeling like my body is failing, plus the medication side effects, I can relax again. I have background anxiety issues anyway.
Thanks for the help, and encouragement to contact my GP about all this.
Oh, and she also said that she thinks that introducing diabetic slgt meds at this stage is premature and encouraged me to try dropping my carb levels a bit more and praised my success so far.
Such a relief.
Oh, and my asthma is stable and well controlled too.