Consult a doctor. As to the blood you received, if was going to be rejected, it would have been long before now. At any given time an average adult human will have around 20 to 30 trillion red blood cells on their body. They also produce about 46 billion per day. That means the transfused blood probably no longer exists. Considering the rarity of diseases transfused with the blood these days, and the fact that your current symptoms resemble your previous symptoms, it is probably the same illness.