I am very confused by dates and I guess since this is new to me I am going to have a lot of questions. I realised that the weeks start counting from the first day of the last period. So does the first trimester end with the 12 week scan or soon after? Also when do people normally start feeling proper pregnancy signs? I am getting funny feelings in my stomach and very slightly sometimes feeling sick but I don't even think it's that much. This is at 4 weeks. I know everyone is different but is there a rough chart? Lastly, how do people keep from telling anyone by 12 weeks? I mean me and my family and friends get together a lot and have stay overs so if I start puking by then (which I'm not sure I will) then I guess it will be pretty obvious. I am amazed looking back at the people I know who have kids at hw they kept it hidden and showed zero signs lol.