Ok so I'm 20 and in my 5th week of pregnancy! Ive worked out my due date will be around the 18th march, It's my first baby, and I'm absolutely terrified already! I don't no what to expect and when to expect them! Not really felt any symptoms other then very very tender boobs! And a few campings in my stumach! They feel abit like period pains... When does the sickness kick in?