Anyone experience Red and brown spotting? Cd21/22?

Charlotte

Has anyone experienced light red/brown spotting on cd21 and today Cd22? My AF is due in 7 days and just wondered could this be implantation bleeding? Ive been feeling some pregnancy symptoms. I've had cramps for the past week and a very tight feeling in my stomach. Plus It's only when I wipe. When I first wake up it's a red colour then after it's like a brown colour discharge. Anyone experience this? Don't want to get my hopes up as we lost our first baby in May. That's why we are scared to do a test. Thank you :)