Bleeding and pregnancy

If you experienced any breakthrough bleeding that was “period like” how heavy was it and what color?

I’ve heard of lots of woman having bleeding during pregnancy that was very similar to a period but they were indeed pregnant and their babies were healthy.

If you or someone you know experienced this, how heavy was it, how long did it last, what was the color, and did it coincide with what your mental cycle would be?

*im not referring to implantation bleeding*