could my husband be that tired

Audrey👬🌈🤰 • Married mommy of two handsome boys 👬 5 &7 miscarried July 2018 🌈 and now pregnant due November 2019 God willing!🙏🏽
So my husband works as a mechanic at the airport and goes in at 6am so hes up at about 5 mon/fri and works 8-10 hours a day he comes home and gets our two boys 3 & 5 because i go to night classes for my bachelors i get home 8/9pm we eat talk and everyone to sleep for the next day he's a great guy does it all but im up to working i have my 3 year old with me and my 5 year old is out of school by 12 so im cooking cleaning working and trying to study until my husband gets home at 4 at the end of the day i want to be with my husband and make love but he just goes to sleep i make advances towards him try to cuddle or fool around and he just kind of ignores it and goes to sleep it frustrates me i think we only have sex on Saturdays and then the work week starts again im 25 i want sex my husband is 29 is he really just tired idk what to do it gets me mad and sad like does he not want me