Dear Welcome to HCM We understand your concerns I went through your details. I can understand. To understand your problem, you should know what is memory. Memory is perception, storage and recollection. memory is complete on when all three of these aspects are fulfilled. If you are not interested in perceiving or storage, you will not be able to recollect anything. This is never short term memory loss. You can talk to anyone. Just ask them, how many days they can remember from their childhood days? How many days from teen age or adult hood or college days or school days? Always any given person will be able to remember a handful of days. That is natural and is happening because there is no need to remember at all. But, important events very few people forget. In your case too, you never forgot those important days of your childhood. You just forgot those unnecessary memory. That is fine. Selective memory is a cliche term. You can be a selective thinker and selective memorizer. Whatever you want to memorize, you are able to. Just talk to a psychologist, who will prove you with all these facts. Stop worrying and please go ahead with your education. If you still need my assistance in this regard, please use this link. http://goo.gl/aYW2pR. Please remember to describe the whole problem with full detail. Hope this answers your query. Please feel free to post follow up queries. Available for further clarifications. Good luck. Take care.