Is this normal

Cheyenne • Had our beautiful baby girl five days early on June 18th❤️❤️❤️❤️
I'm 6+5 today and I just took a test that's lighter than my previous tests. I've been having cramping no spotting so my ob said its fine and nothing to worry about. But I'm worried now!! This is my first test from about a week ago, compared to the one I just took. :( should I go to the ER? I had a miscarriage in December so I'm already nervous as it is.