not sure if this helps but when i first converted to buddhism, i was kept up by dreams that i was going to go to hell. even though i no longer was a christian, those teachings where so deep in me that i felt fear.
it took time but it just went away on it's own. i'm sure the fears you have now, will do the same. part of you knows now something you didnt know then, and as that becomes the dominate knowing, the past knowledge will become less and less a factor.