For the roller coaster, see Sewer Rat (roller coaster) . The brown rat, also referred to as common rat, street rat, sewer rat, Hanover rat, Norway rat, brown Norway rat, Norwegian rat, or wharf rat (Rattus norvegicus) is one of the best known and most common rats.he brown rat is the species common in England, and best known throughout the world.
1 Yes,you can get pregnant after ovulation. 2  There is a 25% chance of getting pregnant during ovulation,and a 5% chance when not ovulating. 3  The egg does not survive for more than 24 hours after ovulation unless conception has occurred.
Is it possible to get pregnant immediately after having unprotected sex? Implantation is the process by which a fertilized ovum (egg) implants into the uterine wall to obtain oxygen and nutrients from the mother. This usually occurs between 6 and 8 days after conception. Conception itself can occur anywhere between a few hours and 5 days after intercourse. This is because sperm can live inside your uterus and fallopian tubes for up to 5 days. If during that period you ovulate (release and egg from your ovary), then the sperm can come into contact with the ovum to make an embryo. From this point on, the embryo must travel down the fallopian tube to implant in the uterus.