Good day, i just found out i'm 5 weeks and 2 days pregnant with my last period on the 1st of octomber(not always regular),fertile days from the 10th - 16th.i'm trying to figure out when did i conceive but i'm a bit confused.can u pls help me?thanks?

Easy to estimate: Nobody ever knows exactly when a natural conception happened. It is impossible to know when a sperm entered the egg. To estimate that date, count backwards "2 weeks less" than the current age of the pregnancy. That means grab a calendar, start from the day the ultrasound scan said "5 weeks 2 days," and count backwards for "3 weeks 2 days" to land on estimated conception day (plus or minus 1 week).