Is there a progression of the lines getting darker?

Hey ladies! According to the first day of my last period I should be around 5 weeks pregnant, I found out exactly a week ago today. I just wanted to know if you guys noticed a darkening progression in the test lines? The first one was last Thursday and the last one was today, the rest are scattered in between. I guess I just wanna be sure my levels are rising properly, I’m so afraid of miscarrying. I already love my little poppyseed so much!