I was feeling dreadful up until last week with the Sandrena I was on.
I think I've been having too much, or it just didn't like me, so I've stopped it.
Having too much is just as bad as not enough, ( nearly ) so, maybe you should just see for another couple days how things are going, hopefully, another couple days and you'll be ok again. Sometimes it does take a bit for them to build back up.
Hang on in there, not easy I know, and keep us posted on how your getting on.
Jd xx