My father in law had been feeling dizzy. He went to the dr to ask to have his tablets changed (blood pressure, omeprezole) and the dr sent for a blood test. He has had it done 3 times (I’m presuming they have been looking for different things) and they have said he is anaemic and sending him for the camera. I’m panicking. What could it be? He has no other symptoms but a quick google (!) says it could be something serious