I really want to understand this?!

I really want to understand this?

The symtoms of pregnancy came out in how many month?u can see ur piriod on first three month of pregnancy?what is the changes of the breast during pregnancy circle an come out after how many month?

All these things start in the first trimester, sometimes in early part of it and sometimes later. Breast changes are noted usually by the end of firsrt trimester or beginning of second trimester.