Nothing. Men do not have symptoms when a woman is pregnant.
YES.
In order for a woman to get pregnant, she must have sperm from a man.
Exactly the same as a non-pregnant woman or a man.
No, some go without any symptoms.
Yes, she can. But a test will clear any doubt.
No; it would not be possible.
No she can not pass it on. Yes, it is not unusual for expectant fathers, close friends or housemates to share the symptoms - morning sickness, cravings and weight gain are the most common.
Every woman is different. So are her experiences of pregnancy. Not every woman has the same symptoms or even the same symptoms from one pregnancy to the next. A pregnant woman could have all symptoms, or maybe have only one or two.
yes
no
when a woman is pregnant
Unless he is a trans-gender the male does not get pregnancy symptoms. Just the woman.