So lost

Brittany • Hello! I`m 26yrs old married for 5 yrs we have a 5yr old daughter and 3yr old son .. We are trying for our 3rd child
So lost I went last week and had blood work done to see how far I am .. They call me today to have it done again because the HCG levels in my blood were not adding up to my last AF ... Now I don't know how far along I am and in freaking myself out