Lots of women do spot during pregnancy and may even have a bleed (a heavy red bleeding episode) and all is fine! Good idea to monitor it with a liner as mentioned and if it seems heavy or increasing in amount and cramps start, call your doctor. but otherwise, I would try not to worry. good luck
Use a panty liner or pad to monitor amount of bleeding and coloration. I had some bleeding at 6 weeks and freaked out but it was due to intercourse the night previous. If you fill a pad within a hour contact the doctor
I did multiple times in my first trimester when I was pregnant with my daughter. Always freaked me out but I had no pregnancy complications and she was a healthy baby!