Hi Sandra,
Sorry you're having to use this forum.
I had 3 core biopsies in total. had the first one, then had a second when another area of concern showed up on an MRI, then had a third when the radiographer wasn't sure she'd biopsied the first area again by mistake the second time. Aaaaargh!
I think the best way to cope is to do whatever makes YOU feel better. Some people cope better by continuing with their 'normal' daily routine, some feel better by screaming, shouting - smashing something can be quite therapeutic! Most probably use a mix of the two.
Can't give you any advice on difficulty sleeping tho' I'm afraid. I still can't sleep 8 months after dx. Rather than lie awake in bed tossing and turning , I get up, make a drink, watch TV, read - basically anything to distract my mind from those dark thoughts all too prevalent in the wee small hours.
Really hope you get good news, but either way, there's lots of lovely people on this site who will help you to cope with whatever life throws at you.
carolinex