I Don't Like Receiving Oral

So. No need to add bells and whistles or long description. Here is my 3 points:

1. I have never really enjoyed getting oral. In my younger years I've had it from men other women LOVED it from. And just don't like it.

2. My husband loves to give oral.

3. I've compromised and allowed him to do it and its always hurting, even just licking the clitoris it feels painful. I've tried coaching him teaching different methods and he's very receptive but no matter what it still hurts.

What do I do? Why am I like this? My husband and I have good communication and hes very discouraged and insecure when I tell him I dont like it he thinks its his fault.

How can I enjoy it? Why am I so hurt by it??