Shingles while taking a Biologic

Have any of you gotten shingles while taking a biologic for RA? I've had it for weeks now and already took antivirals but I'm not much better. It's taking me a long time to heal. I unfortunately came down with shingles on the same day I received the biologic. Am I the only one who's having a hard time getting better? And before you ask if I received the vaccine, I'm not yet at the recommended age for it. Thanks.