Thank you to those who replied to say they could view the blog as normal. Still got a few adjustments to make though. I don't know what happened, it looked like a jigsaw puzzle when I checked yesterday. The colours had changed, the left hand column had disappeared altogether, and the two remaining columns were all over the place and the text size and font style are different, I'll sort that out later.
Anyway, another worrying thing happened this morning, an email supposedly from Paypal saying that I had made a payment of £36 to some company or other - I hadn't.
I've checked and thank goodness no funds have been taken out, I've passed it onto Paypal.
I've also changed all my passwords.