Hey OP I'm now 17wks and feeling a little better than I was in 1st trimester, but not getting the 'bounce' people have told me about. Less all day nausea, but still having random, sudden bouts of puking. I'm still fairly exhausted, but have found a bit more energy. I have a low BP, but have always had low BP. It is making me dizzy but thankfully just being still for a while is enough to get me back to normal. On top of the 1st trimester joys I'm also getting tired legs, achey hips and back (on my feet at work for up to 5h), invasive headaches etc.
I've invested in a dreamgenii pillow, as I seem to be very restless and waking lots, so not helping with the tiredness. It's fairly expensive, but works for me! Had it under a week, and IMHO it's already earned it's keep. Fewer headaches, better sleep, hips feel better, though I'm still having bad 'few hours' and my cats love sleeping on it too! 
I'm still popping ginger capsuals twice a day, as it's just easier than risking not being fine...but I'm still occasionally nauseous, but know it WILL lead to me being sick, so, well, at least I have fewer "will I or won't I?!" moments.
Hope you feel better soon xxx