Cramping and spotting at 6 weeks?!

I started spotting Friday but it stopped Monday until I was getting ready for bed. I used the rest room, wiped and there was reddish pinkish discharge which was different from at first because on Friday it was all brown and it stayed brown but got lighter and eventually disappeared.

I got woken up to pretty painful cramping a few minutes ago that just went away. it’s like on and off cramping.

I have really really painful periods and the cramps reminded me of my period cramps. They’re on and off. The spotting isn’t what worries me unless it gets worst, it’s the pain that worries me...

I just had a miscarriage a couple months ago.. & i’m Not about to have a 3rd one. But I never made it this far in pregnancy before. Is this normal at 6 weeks?