Hodgkins Lymphoma

I am 25 yrs young and I also had HL and under went chemo I did not lose all my hair but it did come out a lil... My cancer was in 3 different places my neck chest and stomach the chemo killed the big mass in my chest and stomach but it didn't kill the one in my neck so they did anoter biospy on it to check if it was the same type of cancer or if it mutated into another type thank GOD it didn't it came back HL but now the doctors are saying I might have to do chemo all over again which sucks soooooo BAD!!! or they might do the stem cell transplant they sending me over to city of hope to see how we should treat it since the ABVD didn't kill that one area....Do anyone know about stem cells and what are the side effects??
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How many rounds of chemo did you undergo? Did you have really bad side effects such as nausea?