Insomnia in TWW?

Does anyone else struggle to sleep in their TWW? I've barely slept the past few days and I've had slight cramps. I'm only 2-3 dpo so I know it's far too early for anything. I'm wondering if it's the panic of hoping I'm pregnant or if something really is going on! This is my first cycle and last time I got pregnant (+mc) on my first cycle too and experienced all this so I've no idea if it's a good sign or not!