Insomniacs please help!

I have a new thing, insomnia. It started a few months ago. It’s very off and on. With someone who has never had an issue sleeping I need help. My doctor gave me a prescription for Unisom. It helps physically but it will not calm my mind down. I have some serious anxiety which is nothing new but now it’s disturbing my sleep. The last 7 days..4 of them have been sleepless nights. I just lay there and can’t turn my mind off. My heart races and I go into a full on panic attack. I work full time and have 2 toddlers. This mama needs to get back on track for the sanity of our household. Any advice would be appreciated!!!