Insomnia

My boyfriend and I are TTC (almost 6 months now). Last week I got my period, but shorter as usual.

Since then I have headaches from time to time (normally never have that) and I have troubles sleeping.

I don't fall asleep when I go to bed, often lie awake for more than 1 hour. I wake up at night multiple times and I am awake very early in the morning. So really don't sleep alot lately.

Anyone got an explanation for it? Don't think it has to do with us TTC? Or advice how to get rid of it?