Don't want sex !

24 weeks pregnant and all I want is my vibrator I do not want sex at all I feel so bad for my husband it's not him sex is just not comfortable what do I do ?? He knows I don't care about him jacking off I know he really wants to have sex and brings it up all the time and giving him a blowjob is not an option this pregnancy has made my gag reflex so bad I'd puke ! Anyone gone through this before ??