Nausea is controlling my life!

I'm 7w3d and the past few weeks have been miserable!! This is my 2nd pregnancy, and it's nothing like the first! 
​I'm nauseous or throwing up constantly. And now it's keeping me awake at night. No sleep and no food makes for one defeated and grumpy momma! 
​I bought some sea bands today (can't tell if they're helping) and a bunch of ginger chews! 
​Sorry for complaining, I just feel so helpless. Please, please don't let this last much longer!