Anyone else get recurrent mastitis?

OK, looking for non-glib, non-"kellimom" answers. I am currently on my 5th round of antibiotics for mastitis with my almost-6-month-old daughter. Has this happened to anyone else? If so, what did you do? If I do try to stop breastfeeding, how do I do it without getting mastitis again? I don't really want to give up breastfeeding but I keep getting ill! My positioning is fine, I just think my wee girl doesn't open her mouth up wide enough. The infection is more in my nipple than my breast. Getting fed up. Any good advice gratefully received : )