i need to calm down

I just found out over the weekend I'm pregnant I haven't been to a doctor yet they are closed till Monday so I will be calling once they open but I'm still scared it's not real I haven't had any symptoms but being 3 days late and 4 positives I have felt sick to my stomach but that's about it. this is my 2nd pregnancy I have a 2 year old even with him I had no symptoms until 8 weeks I'm guessing I'm around 4-5 weeks maybe but I have been a little crampy not bad though like AF it doesn't hurt just dull aches here and there. I just really hope this is it and that I have a healthy baby.