You had a frozen embryo transfer a week ago and you are having spotting on and off and having some cramps too Is that normal is the baby still trying to attach to the uterine wall?

I haven't heard of this being normal in your situation hun. Spotting can occur which is known as implantation bleeding 8-12 after intercourse. However, if you had the transfer 8 days ok then it could be implantation bleeding but I really cannot be certain. Contact your Doctor for advice.