Symptoms may not start for 6 to 12 hours after exposure to the ultraviolet light. Symptoms include: 1  A feeling that something is in the eyes (foreign body sensation). 2  Sensitivity to light (photophobia). 3  Tearing.
It is divided into three stages, called trimesters: first trimester, second trimester, and third trimester. Conception to about the 12th week of pregnancy marks the first trimester. The second trimester is weeks 13 to 27, and the third trimester starts about 28 weeks and lasts until birth.
You are 5 months pregnant! First trimester: 0-12 weeks pregnant = 0-3 months pregnant. Second trimester: 12-24 weeks = 3-6 months pregnant. Third trimester: 24-36 weeks = 6-9 months pregnant. There is a reason pregnancy is always counted in weeks and not months, so it is exact. If a stranger or colleague asks however, I would tell them how many months I am approximately, as it's just easier and makes more sense to a common person.