All content in pages gets overwritten

Hey there,

I'm very new to Squarespace and recently started to create my own website. I designed a home page yesterday and today started to design a contact page. Now my home page is overwritten with the content from the contact page. All my work that I have done is gone. When I create a new page and choose it to be a blank page it has content from my contact page in it. For some reason all of my other pages have same content. Non of them are blank. Please help!!