The secret to great sleep!?

I’m 15 wks with baby #3. The first trimester I was sleeping like 10 hours a night but I was still incredibly fatigued all day and sick as a dog. Once the nausea went away, I started having more energy and began working out again but sadly, I couldn’t sleep any more! I’d be lucky if I got more than 2-3 hours of continuous sleep. Well last night I slept from 9:30pm-5:20am!! It was amazing! The secret?? It might be great sex and a wonderful day with my hubby. We had the best night of sex. I think I was so tuckered out and happy, I slept 8 hours. No bad dreams. No waking up to pee. It was great. ❤️❤️❤️ I woke up on my own 10 minutes before my alarm is set to go off. I feel happy and in love. What a way to start the day ❤️❤️❤️ have a great day everyone!