I had a new cancer in February and went through a total of 4 chemo treatments . There are times my heart beats to fast is this because of the chemo treatments that I took and I still find out I tire out easy . I shouldn't get tired still I had my last chemo treatment on the 10th of June. the thing that I find out that has been helpful to me is take one day at a time and trust in God. We are not alone . We are going through a storm in our lives and it is alright to be scared during the storm read John 6:14-21 . Also we all have family that care about what we go through and are here to help us through the hard times .