Yesterday, I had a bit of weird, brown discharge. Sometimes, the day before my period starts and a bit afterwards, I get some dark brown goo, but this was different. It was the same consistency as my usual mucus but light brown. I usually have fairly regular periods but am on cycle day 45 right now (I did take a pregnancy test Monday: negative.) It started late morning, and by the end of the day went back to normal.

Today, it's generally normal, but when I wipe, there are streaks of blood.

Does anyone know what this could be?