Horrible nausea 8 weeks and 4 days

Valerie
Hi ladies. I have been suffering form severe nausea it doesn't go away I go to sleep with it and wake up with it. I was prescribed zofran by my doctor and I know there's a lot of controversy about it but after looking into it I made my own decision to take it. It still doesn't feel like it is helping though, supposed to take it 3 times a day but sometimes I take it too late and only gives me a chance to take it twice a day (it's every 8 hours) anyone going through this? I am losing my sanity with the nausea it really is controlling my life and I have a full time job, not to mention constipation is just not helping from the medicine either. What can I do? I'm I not taking it correctly ? It's 8 mg dissolvable mini tablets