Bleeding

Tora • 43 and pregnant with my first baby.
Well not necessarily blessing, but spotting. Went to use the restroom in Wal-Mart and I have dark blood (spotting) one drop in my panties. I'm 7 weeks pregnant, 43, my first God knows I want this baby. I know we aren't supposed to bleed or spot, y'all please pray for me. Anyone ever experience blessing/spotting during pregnancy?