Adults in the U.S. are encouraged to get 10% to 35% of their day's calories from protein foods. That's about 46 grams of protein for women, and 56 grams of protein for men. It's not hard to get this amount if you eat two to three servings of protein-rich foods a day, according to the CDC. A small 3-ounce piece of meat has about 21 grams of protein. A typical 8-ounce piece of meat could have over 50 grams of protein.
The final and longest stage of prenatal development, the period of the fetus, extends from the beginning of the ninth week to birth (about seven months). The major organ systems continue to develop in size and function throughout this period and the fetus' size is multiplied by a factor of ten.
I believe babies have survived being born earlier in the pregnancy than this, but have not lived for very long. Finding the world's longest pregnancy is a little trickier. There have been claims for 10 month pregnancies in the past, but this is more than likely due to a mix up in dates. Also, a women might miss a period or two without being pregnant, then fall pregnant, making the pregnancy seem longer than it really is.