Are the sperms inside the testes eating the fluid & dead sperms around them, there may be dead sperms in my testes that i think is 2x exposed to xray?

No: Sperm do not "eat" each other - the body resorbs unreleased sperm over time, but ejaculation can help "clear them out". To learn more about radiation exposure please visit: http://www.Conciergeradiologist.Com/radiation-exposure.Html the closer the x-rays were performed to your testes, the greater the likelihood that you may have some sperm cell mutations, but this is still extremely unlikely.