Insomnia ???

Rebecca • 27, engaged and getting married Feb 2017. Can't wait to have our little boy at our wedding with us, due 23rd Sept 💙
Has anyone else experienced insomnia as an early pregnancy sign? I'm 8dpo and AF due tomorrow according to glow, although I think she's due mid to late week. All this week I've not been able to go to sleep or stay asleep at night. It takes me about an hour and a half to get to sleep and that's with calming music, then I've been waking up at 2, 4, 5, 6... Etc!! I went to bed last night at 10 so so tired I was falling asleep on the sofa and woke up at 2 then 3 now wide awake at 5?? It's driving me mad!