Thanks for your consult at DoctorSpring.com. I have gone through your query in detail and I can understand what you are you going through.
Sex is a psychobiological phenomenon and involves good functioning of body and mind. Now in a premarital relationship there are lot many unanswered queries in mind about its cultural inappropriateness and fear to go wrong along with a pressure to perform. This causes anxiety finally leading to premature ejaculation.
Now these are transient phenomenon and whne you both become comfortable with your bodies the anxiety goes down and premature ejaculation will vanish.
Just give it some time.
For my patients who come to my clinic and have a persistent problem despite getting married I prescribe them tab paroxetine 12.5 mg at night for a few weeks and this helps. But one should wait before starting on meds.
Unfortunately being an online forum i wont be able to prescribe you medicines but i hope the information given to you might stand useful. Please feel free to discuss further.
Dr. Srikanth Reddy
Psychiatrist and Sexologist