I'll in pregnancy ?

How can you stop yourself from being nasua and sick in pregnancy im only 5 weeks and 5 days, and  every day this happens my partner is working away,  and I have a one year old to look after, it's just getting on top of me now. :( just give up. Plus little one doesn't have a nap anymore due to she doesn't sleep at night :( so can't have any rest either. Any help appreciated.