Back to low carb and having some health issues. (TMI)

[TitsalinaBumSquash]

I am back to eating LCHF diet and I'm pleased to say both DH and I have lost weight steadily.
However I don't appear to be getting the health benefits i did before when I followed this woe.
I was hoping it was just slow to kick in but it's been a while now and it's not happening.
Not only that but I'm struggling with having on/off dark green watery stool and a lot of acid reflux to the point of feeling quite sick often I am also getting sudden crashes of exhaustion, this has started since eating this way.

I also really struggle to eat a lot at all which I know is meant to happen to an extent but I can go days without being hungry or thinking about food, I eat dinner but only because I'm making the conscious to have a portion of what I'm cooking.

I'm taking potassium/magnesium supplements but they're not doing much.

[BIWI]

What have you been eating/drinking?

Are you getting plenty of sodium?

Are you eating plenty of fat?