First off, if you've been vomiting a lot, you need to replenish your salt as with each vomit you are losing stomach acid and the chloride in salt. While you serum sodium is still within range, it is near the low end of range and as you continue to vomit, your sodium levels will continue to get lower.
Looking at your RBC and hct and hgb, which are way beyond normal range, it may point to lo blood volume as a result of low salt levels in your plasma which keeps the plasma ecf (extracellular fluid) from osmotically drawing water from the non-plasma ECF to your plasma ECF. This will make your blood contain less plasma thus lowering blood volume. This makes your blood have more RBC per unit volume (as well as hematocrit and hemoglobin) very high.
I don't know how if you could increase oral intake of salt and whether you need sodium chloride IV instead. And I don't know how much you need to take. But I think some action is needed as when your salt level drop beyond range you may have to be rushed to the ER. But to be safe, a visit to the ER to consult with them would be a good step to take. Explain to them your situation and they may just tell you to take more nacl tablets, or they could put you on IV.
Secondly, it appears you have metabolic acidosis. With your urine being very dark, it may also be that you have oliguria (low urine output). I recently had that condition, and I'm not sure why acidic urine and oliguria goes together, but I suspect that your urine is very acidic because your body is very acidic but because your blood volume is also low, there is not much water that can be excreted with water being taken out of your blood to form urine. Why I think you have metabolic acidosis is because of your high anion gap and low HCO3 (bicarbonate).
I wonder if you also are experiencing edema in your ankles , calves, or even tour thighs and your torso, as I had them when I was having very dark urine with oliguria.
Can you also send the ECG graphs if you have them? I'd like to see how high the QRS wave is. The QRS wave I the positive spike that is usually high. Helps to know more about your heart since you have palpitations and ectopic couplets.
I'm still looking at other markers and I'd like to have your answers the soonest.