period due in 6 days...cramps and very light spotting

TTC baby #2 and I never had spotting with my first...,I know cramping is normal but I'm not due for AF until 6/7 and last night I had a streak of red when I wiped and tonight a very small amount of brown discharge ...I've had like burning type cramping and twinges all day on and off ..just wondering what could this be....is this a normal sign of pregnancy? Is it something to be concerned about or maybe AF?? I'm never early I run 29 days pretty much every month ....this TWW is killing me! I know it's too early to test 😒 help!