yes my dad (in his mid 60 s) has hbp and he recently injured his chin about a week ago at work, we went to see a doctor and she gave him a antibiotic shot to help with the infected scar, but now suddenly he has really really low blood pressure, at 9:15 it was 84/45 at 10:11 it was at 97/62 at 10:34 it was 102/64 pulse 81 at then at 10:47 it was at 93/62, please help me, do i take him to the emergency room?