By one year a baby would have developed preference for adults, toys, and books they are accustomed to. They may show preference to these people or items, and may not be interested in accepting someone or something else as a replacement.

Leaving a baby in a wet or soiled diaper may lead to a condition called diaper rash. Diaper rash is a red, tender looking area on your baby’s bottom or genitals. This may cause your baby to be fussier then normal, particularly when the area is washing or touched. It may also become infected if not treated properly.

Endometriosis occurs when tissue that normally grows in the uterus implants and grows in other locations. This extra tissue growth — and the surgical removal of it — can cause scarring, which may obstruct the tube and keep the egg and sperm from uniting.

Some women may experience allergic reactions to the rubber of the cervical cap or the spermicide they use. If this happens and your spermicide has nonoxynol-9, you may try a spermicide without this chemical.

Though some studies have shown IUD to be effective for as long as 20 years, it is approved only for 10 years of use.

There are different types and sizes of IUD and they can work for between 5 and 10 years depending on the type.