I don't know how to get through this

Food adversion and nausea really set in (started wk5 day3) I have EXTREME anxiety regarding nausea/vomiting. I don't know how long I can do this. Minutes seem like forever and days feel like an eternity. I can barely nibble on anything. My doc gave me anti-nausea meds but it's not making me want to eat any more. 
Who knows when the light at the end of this dreadful tunnel will appear. 
I'm just not cut out for this pregnancy stuff, I'm weak. 
Any helpful advise?