I have a question for other prego woman

Cheyenne • I an 27 and I have a 3 year old boy, 6 year old boy, a 7 year old little girl, and 16 month old little girl
I am 5.4 weeks and I found out for sure yesterday that im pregnant. I been having some period like cramps and pressure for about a week. I have no had ANY spotting of blood since my last period on the 28th of April. Did anyone else experience this in their early pregnancy? Im worried and my first appointment isn't until the 20th.