can't do this anymore!!!

my morning sickness has been horrendous since 6 weeks, I'm now 12 weeks. I throw up every day and I'm just so nauseous all day, it's awful. I've been in hospital a few times now and on medication, which doesn't seem to be doing anything. I feel like I've gotten slightly better the past week but it's still horrible! when will it ease?? how did u know your morning sickness was getting better? I'm so over this!!!! I also have a toddler to look after!