hi my mum is 65 and has never been ill all her life until last year when she had a heart attack and had stents fitted and has been on medication ever since, for the past couple of days she has been feeling dizzy and it has been going black like she is going to pass out , she dosnt pass out but she cannot hold anything down either and she has low blood pressure. she went to the doctors yesterday and he sent her home with some antibiotics saying if your no better in a couple of days come back and we will send you for a chest xray. she went home took an antiobiotic and threw it straight back up, so she went to bed. the doctor just said he thinks it is some kind of infection. I am worried because my mum carries on regardless but she isn t and looks ill , I just think because of the low blood pressure the doctor should have sent her to the hospital and I am very worried about her . do you know what is wrong with her ?