Looking for a father! What is the possible date of conception?

My menstruation came on 01 of 02 and I had relationship on 07 of 02, on the 14th of the 02 and also on the 18th of 02, what would be the possible date of conception?
Expert answer:

All these days you mentioned are possible dates, being the most likely day 14, then day 18 and day 7.

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