How long does it take for sperm and eggs to combine to detect pregnancy

Sperm and eggs will be combined in the earliest 12 days, to the hospital for blood, check whether pregnancy. After the couple in the same room, sperm and eggs will be combined within 24 to 48 hours to form a fertilized egg, after the formation of fertilized eggs, will be 5 to 7 days after the success of implantation, so in pregnancy 12 to 14 days can be checked. If in the same room after half a month did not check pregnancy, it means that pregnancy failed. It is recommended that you can rest properly in bed after the same room. Do not get out of bed immediately. You can use a cushion to raise your hips, so that sperm and eggs can be better combined, which can effectively increase the chances of conception.