Hello,
Thanks for posting your query.
It is not always necessary always for you to ejaculate only after
masturbation.
There could be insemination even on its own without self stimulation.
If it is not a pus discharge and if you do not have symptoms like
fever or burning or increased frequency while urination you need not worry.
I suggest you to start your sexual life post marriage.
Hope I have answered your query.
Wishing you good health.
Regards,