Brown Spotting Cramping

marlieee

I am having on and off everyday brown spotting with some light cramps nothing intense. My HCG Is 535. I had a chemical pregnancy about 2 years ago. I am hoping my rainbow stays so I can meet he/she in 9months. I am freaking out as I don’t want to have another loss and don’t get my levels checked for another two weeks. I test everyday but I’m so scared. Would this be old blood possibly?