No i have never been on any medication or illicit drugs.
Hi there. What you are describing here is called delayed ejaculation or ejaculatory incompetence. It is sometimes caused or made worse by certain drugs or medications. It is not related to masturbation history other than to prone or face down masturbation if that was used as an exclusive way of masturbating.
Are you on ant medication or drug either prescribed or illicit? Were you ever on such meds?