It's no cause for concern, beta. The consistency and volume of semen has nothing to do with masturbation. And neither is it any indication of fertility or infertility.
https://lovematters.in/en/resource/ejaculation
https://lovematters.in/en/news/semen-top-five-facts
https://lovematters.in/en/news/watery-semen-dont-blame-masturbation
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It's no cause for concern,…