During the month of Hot Chocolate
No, you cannot have a period the first month of pregnancy or at any other time during pregnancy. Menstruation occurs if the egg has not been fertilised, and you cannot menstruate during pregnancy.
after 3 month
NO! it's not recommended for later in pregnancy so definitely not in the first month
No, exercise is good and important throughout the pregnancy.
no you can't no you can't
Yes
yes.
the size of a pinhead
Yes. It is safe.
Yes, that is very normal.
the eggs are formed before pregnancy that is how the women get pregnant!