Insomnia is driving me crazy

I’m 6 weeks and omg the insomnia is too much. In the last 3 nights I’ve had about 7hours sleep in total and tonight nothing - not even 10minutes sleep!!!! I’m a nurse and I’m at work today and it’s starting to effect me now. I don’t want to ring in sick and leave my team short staffed on a Saturday but OMG I can’t cope! Going to pharmacy later to get some sleeping pills to see if that helps. Anyone the same? Will the baby be ok? It’s really stressing me out now 😩😩😩😴😴