It's amazing hearing other's experiences as they are all so similar to what I've personally experienced.
I remember from a young age being totally embarrassed about going swimming without a t-shirt on, I thought it was just weird.
I remember playing video games with my cousin as a child and always picking the girls, I would always make up some random excuse about why I did it as I was aware that it was not typically behaviour - even as a young child.
I was always ultra sensitive and would cry uncontrollably if I was ever told off, and would never be able to fight or argue with anyone as it left me feeling shaken up and traumatised.
I have always been incredibly affectionate towards other human beings and also animals, and I have heaps of sympathy for people.
I guess when puberty started I had a feeling that something bad was coming and told myself to "enjoy life now" as I could almost sense something terrible knocking at the door. Body and facial hair started growing and I remember my parents kept suggesting getting me an electric shaver as a Christmas present, after having refused lessons from my dad on wet shaving (I was so embarrassed about talking about it, let alone doing it). I was so upset by this suggestion of a present and felt so ashamed at having to remove hair from my face. I started going on antidepressants at age 14, despite my doctor's reluctance due to my young age, I assured him that I was really on the edge and needed some stability fast. So I'm 18 now and am still on antidepressants, but have finally come to terms with my transsexualism. I guess it was at 15 that I finally realised what was wrong with me after searching my feelings on Google and browsing through forums and sites. It has been a pretty dire 5-6 years but I'm hoping now I can find some peace and get the help I had refused myself for so long due to embarrassment shame and self loathing.
Edit: I started using Second Life in my early teens, I used my debit card at age 14 for age verification and it somehow let me pass as an 18 year old? Anyway, I used to spend any pocket money I earned on buying pretty clothes for my avatar, probably spending up to about £150 over the course of 2 years. It helped me get through my feelings by having this release, being able to put my feminine personality into this beautifully constructed avatar. But it also made me feel very depressed when I stopped playing it and realised I had to go back into boy mode. The funny thing is, even though I was using this program, I didn't actually realise for ages that I was trans, I thought it meant I was just gay or something - even though I had attraction towards both men and women.