I'm 6 weeks post-op and have been following my surgeon's directions exactly. I still occasionally get a small amount of blood and other stuff, not worried and I haven't experienced any complications at all. When I was in the hospital my surgeon (Dr. Ley) very clearly explained a reasonable amount of blood and stuff is totally normal and a necessary part of healing.
Make sure you're using a medically recommend lubricant while healing, and use enough to get the job done. At the hospital I was provided a 4 ounce (118ml) tube of McKesson's Lubricating Jelly, I ordered a case of it
from Amazon before heading to Arizona for my remodel. I ordered that brand based on recommendations from several other Susan's members who have had GCS.