So tired....

Anyone have any tips for extreme tiredness? I am going to bed early (some nights as soon as I get home from work) and sleeping for at least 7-10 hours a night (with the exception of getting up to pee 2-3 times a night, though I usually fall right back to sleep). I feel like my hubby is bummed every night I tell him I'm going to bed early, since we aren't spending that time together, but I'm just so dang tired! I'm sure the vomiting and nausea are not helping, but I just don't know what to do other than sleep! Any tips would be appreciated! (8w6d today)