Need advise on spotting

Nandy • First time mom

I had a miscarriage in Aug,2018. I am 4 weeks and 5days now. Today i saw a brown spot every time i wipe down. I have mild cramps, sore legs, mood swings, anxiety. No other symptoms. Am scared as hell if this might lead to miscarriage. Please advise if anything i can do or care. I am in need of prayers. All i can think about is crying about my fate, since i saw that.