Hi Thank you for asking HCM I have gone through your query. Your problem can be most likely due to anxiety. But better to run STD panel tests for assurance. Anxiety or performance anxiety can cause premature ejaculation. Thought changing while nearing ejaculation , stop and start techniques, using condoms or condoms with anesthetics, having sex in positions which give less sensation to penis are good to prolong ejaculation time. If not helping then you can approach a psychologist for behavioural therapy. If that is also not helping then a short course of SSRI group drugs like paroxetine or dapoxetine will be helpful. Dapoxetine can be taken just 1 hour before sexual intercourse also. Hope this may help you. Let me know if anything not clear. Thanks.