When do you find time for sex?

My husband and I both work full time, we have a very active 3 year old daughter. Also I'm 18 weeks pregnant. Our daughter goes to bed between 7:30-8PM but after getting up at 7am, drop off, work all day, clean up, make dinner, play, give a bath/read stories; I'm just about asleep in her bed! Some nights I can stay up a little later (9:30) but to catch up on all the shows I missed from the previous week lol Needless to say I'm exhausted and I've been neglecting my husband in the sex department. When do you guys find the time? Does your SO complain when you haven't had sex in a while/often?