Morning sickness is making me miserable

I eat crackers, drink plenty of water, eat fruit, wear the "sea bands" but i still feel nauseous constantly. I'm 7 weeks tomorrow and have only ever thrown up the one time but feeling sick all the time is starting to take a toll on me mentally. I try to force myself to eat but it's hard when your tummy is telling you otherwise. People have also said they've noticed I look slimmer which worries me since I should be putting on some weight for bub. I have maxolon which I'm trying not to take incase I get dependant on it. Does anyone have any other ideas of what I could do to try and relieve this all day sickness?