Sorry to hear you're not feeling well. I don't have any advice on the high bp, but I just happened to be talking with my sister about heartburn and cankles today! She said that they both started for her around 22 weeks with her pregnancy (I've been luck so far with just a couple of hours of heartburn), and she said that what really worked for her was drinking a lot of water. That and putting your feet up are supposed to help with the puffy ankles too, so hopefully that works for you.
I've also tried eating smaller meals but eating more frequently, and that seems to help with the heartburn.
S, wife to M, missing my angel baby (May 2009) and just welcomed our son, D, 7 lbs 2 oz, 20.5".