Hope your weekend is going well. My H is also working all weekend, as he has for the past 3 weekends. The kids are gone again, and I'm just hanging out by myself...not a bad thing.
I also have high blood pressure (on medication for about the last 5 years), but since I'm the HD in our marriage I don't think that is impacting my sex drive. Getting upset over the frequency of sex is more likely to drive the blood pressure up!
I understand how you're feeling about the "dart" and hope he followed thru with his intentions. In my case, my H always promises to make more of an effort but never seems able to do so. It's kind of like the boy who cried wolf; I just get to the point where I don't believe my H will make an effort at all.
I can never get my H to understand that when I'm feeling kind of low or have had a rough day at work, or can't sleep, sex is EXACTLY WHAT I NEED. It's the best way in the world to put aside my worries AND just relax 100%.