First it was mild cramps then about 15 minutes after I had light pink spotting then half hour it was dark brown then cramps got a little worse. Now it's a mix of dark weird colored red and brown mixed with mucous. Some clots no more cramps at all. This has all been in one day. I believe I am 6 weeks along give or take a few days. Anyone have something similar? Cause for concern?. No pain.