hyperemesis

Hi guys

So I've been diagnosed with hyperemesis. I was hospitalised for 2 nights at the beginning of the week. Since then I've been put on different meds for the week, these have stopped me throwing up but I'm still really struggling to eat. I seem to have an anversion to every food. I'm now starting to get really light headed and worried. Are there any foods people have found easier to eat? Also is there a reason why they only put me on tabs for a week? As now I'm worried about ended up in hospital again when they run out. Thanks x