Help with new tattoo healing please?!?

Hi i got my tattoo yesterday on the bottom of my back about 5;30pm, he and all my friends that had tattoos done before had told me to use preparation-h ointment. The tattooist told me not to put anything on it until the next morning ( this morning) , But last night around 8pm it felt really scabby and raised etc, so friends said to put preparation-h on then. I have also put it on this morning and about lunch time. At lunch time when i put it on, a load of black grittyness came off when putting it on, which i was told by friends is the scab coming off. But all were shocked how little time it had taken to scab and for it to start falling off. Is this normal, and what can i do to help it? I really like my tattoo so i dont want to ruin it and it end up looking awful for the rest of my life?! xx ONLY ANSWER IF YOU ARE IN ENGLAND PLEASE!