Yea you'll be sensitive down there. Its because of all the extra blood flow. If it was red and lots of blood to fill up a pad then its something to worry about. But since it was only very little
Sounds like you were just spotting and its dried about blood from that :)
It was more like fingering to be honest.. But ok good cuz down there is still being sentative
If it was brown later in the day its just dried blood. Its normal to have some spotting like that during sex.