Congratulations on your weight loss!
I know how difficult losing this much weight must have been for you. What a great achievement!
I have been trying to do the same with little or no success. I am on multiple meds, five of which are for the blood pressure control. Because so many medications alter our metabolism, their use often results in a weight gain. I was no different. After going on the meds, the weight started to pile on. For the most part, I have managed to keep it off. For almost a year (before returning to work), I walked faithfully for two hours every day and also did 1/2 hour of resistance exercises twice a day. Because of my dietary restrictions I eat very healthy food. In spite of my efforts, there has been no weight loss. Though I have remained very active, I no longer keep up the daily routine.
I am currently dealing with issues similar to yours regarding my blood pressure control. Though I had many fleeting hypotensive episodes in the past and a couple of longer lasting ones (the longer ones a result of an extra dose of Hctz for treating edema), I now have a consistantly lower blood pressure. It is normal to low, with minimal medication (a fraction of my usual daily amount). It dips really low with the medication, making me symptomatic like you. Being dizzy and feeling unwell is not a good feeling.
There is no doubt that your weight loss has led to an improvement in your blood pressure. Hopefully, your pulse rate will not get much lower -do you feel tired a lot?
Your drug regimen needs to be reviewed. Some adjustments to it might be necessary. You should purchase a good blood pressure monitor and learn to use it properly. Do not rely on the readings you get in shopping malls. Take your blood pressure at least twice a day at the same time of day. Keep a record of the measurements, the times and the circumstances. Show this diary to your doctor. If that isn't convincing enough, there's the ambulatory blood pressure monitoring. You should not have to resort to that. Any further weight loss might lead to an additional reduction in your blood pressure. If your physician refuses to review and adjust your medication, start looking for another doctor.
Good luck,
flowergirl