4 weeks 6 days pregnant and spotting!

Yesterday morning I had my blood test. Everything has been so different his pregnancy! This is our seventh pregnancy. We've had two successful and four miscarriages. After I got home yesterday, I started to spot. Not a lot, just when using the bathroom and only on the toilet tissue. I called my doctor, they said not to worry and that spotting can occur for a number of reason. Later in the evening I got a call about my blood work, HCG read at 875! So I got hopefully and the spotting stopped. Today, it started first thing again this morning. I have never had this amount of spotting and gone on to have a successful pregnancy. Has anyone here? This picture is what is basically looks like every.single.time. I use the bathroom. Spotting starts brown, then bright red, and finally light red and barely there!