Hugs Dove. This is such a scary thing. With my son (now 6) I had thick dark red to almost black loss intermittently until about 16 weeks. It was scary so I can really understand how you are feeling. He was born healthy, strong and on his due date. Sometimes hearing stories from people who have been there can really help with your confidence.
As Dachlostar suggested go to the link she provided and it may help you to feel more confident.