A little advice please??

So I need advice for 3 things,

1, I am 6+4 weeks pregnant with my 4th child my children are 4,3 and 1 and I’m looking for advice on how to deal with school/nursery runs and a active 1 year old as well as feeling like rubbish?

2 I’m a bit of a big girl now due to baby weight and before learning about this pregnancy I was starting to eat healthy and exercise to loose a bit of weight, can anyone help me on what’s sort of things will give me healthy life style to be as healthy as I can be?

3 what does everyone think about announcing the pregnancy to family this Sunday at a family bbq I’d be 7+2weeks I’ve got a scan booked Saturday?

This is me the weekend before I found out about baby #4