Hello - let me start by saying every pregnacy is different, in the first trimester which is week 1 to 12 you may experience
morning sickness which is not just in the morning could be all day everyday and normally starts around week 6, tender boobs and the nipple colour may get darker. Your mood may be up and down due to hormons. With the birth it hurts quite alot but you midwife will be able to discuss pain control methods! Have you told your mum you are pregnant?