By two months a baby’s neck muscles should have developed enough for them to support the weight of their own heads for short periods of time.

In a newborn baby, even a slight fever may indicate an infection. Since your baby’s immune system is not developed, they may need medical attention to fight even the slightest illness. A physician should examine a newborn with any degree of fever.

Your hands or feet swell suddenly or you rapidly gain weight — it may be preeclampsia.

Folic acid helps prevent neural tube defects (NTDs)—serious birth defects of the spinal cord (such as spina bifida) and the brain (such as anencephaly).

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.

Other causes of infertility include poor sperm quality, sperm not moving well (poor motility), or not having enough (or any) sperm to begin with.