Scared and worried (tmi but no picture)

Heath • Pregnant with second baby. Daughter is 2. Married for 5 years.
So I am just over 8 weeks pregnant and I just wiped and had definite brown discharge. The weird thing is most of my pregnancy I haven't had any discharge and I have been dry as a bone. A few days ago I noticed a little tinge of yellow and a little more discharge. Then tonight I noticed a small hint of red to the discharge in my underwear (more of a rust color) and when I wiped I had brown. Since then I have been crampy but I don't know if that is because of my worry. I will call the doctor in the morning but I would love insight. I don't have my first appointment until I am 10 weeks. I hate not knowing what my body is doing and feel scared. I mean it is almost a complete "cycle" since I first missed my period so maybe my body is fighting against me having one? I don't know. Wishful thinking. I know you can't give medical advice but if you have any stories or information that may help, I would love it.