i feel like bugs are biting me all (pin pricking sensation). no marks, no itching, and I haven't seen any bugs. has been going on for several weeks . keep taking showers, but doesn't help. New medication as of July 2, 2015, Myrbetriq. Stopped taking 7/25, but still feel the pricking. could I be allergic to drug or do I have some kind of bug? my