So scared

Last night my husband and I took the dogs for a walk came back in and I went to the restroom, when I wiped there was a little spotting. I flipped out and of course went to the er. They did blood work and ultrasounds. I went to the doctor feb 26th, last Thursday, and was only measuring at 6 weeks well last night they said everything was fine and I was measuring at 7w3d. In four days my baby has grown a lot lol. I'm just so glad my lil honey bun is ok :)