Am I leading him on?

I said to my boyfriend the other day that I would give him head, on previous occasions I'd told him I didn't like blowjobs and wouldn't
He asked me for head and I told him I didn't want to, he knows I'm scared il screw up and I just don't want to
He's told me Ive lead him on and won't talk to me
I didn't know what to do I feel really bad, am I in the wrong?