Hi Dr. Purushottam welcomes you to HCM virtual clinic! Thanks for consulting at my virtual clinic. I have carefully gone through your query, and I think I have understood your concern. I will try to address your medical concerns and would suggest you the best of the available treatment options. 1.First of all do not panic. 2. In my opinion, it takes 10 to 15 days after removal of Impalnon, to restart egg formation. 3.Though he claims to have withdrawn his penis before ejaculation, he would have deposited the pre-ejaculatory secretions (precum) in the vagina. They are deposited without any sensations. Precum does contain sufficient amount of sperms which can fertilize the ovum. 4. I will suggest you to wait for 15 to 20 days after the last unprotected sex act. Then,I will suggest getting morning’s first sample of urine tested for pregnancy. In case of doubt blood beta HCG test and USG can be done to confirm or rule out pregnancy. 5. Even if you are pregnant, you can opt for termination with medicines safely till 9 weeks of pregnancy under expert medical supervision. I hope this answer was helpful to you! Thank you and best regards! Dr Purushottam S Neurgaonkar