Sadly, despite worming my goats post kidding, I lost a goat last week, she went downhill so fast didn't show any problem until the Tuesday, a bit sluggish coming in, treated fo low calcium, dead Friday night, (did have a vet visit) initial PM showed high lungworm and roundworm, so vet told me to use Dectomax on them all.
Wormer was Rycoben, which should have covered these.
Can't your vet suggest anything?