I have a resting heart rate of around 50bmp and low blood pressure. I m 23, female, unfit, normal weight. I don t really have any symptoms. The other day however, I was swimming in the sea becuase it s just part of a tradition here where you swim into the north sea at sunrise on the first day of may. When I came out I have a cut lip, which was from a bottle. Went to first aid van and they took my blood pressure and said it was the lowest they had ever recorded, the doctor was middle-aged! They kept me there til it was normal but told me to go to the doctors the next day. I d been drinking a lot, I was very tired too. Should I be seriously worried?