I had a little bit of a painful bowel movement and i saw bright red blood in stool. i feel weird a little now. any advice?

Probably a fissure: A painful stool with a little blood in a young patient is most often an anal fissure. That is a small tear in the lining of the anal skin from passing a large hard stool. The majority of these will heal with keeping the stools consistently soft for a few weeks. Use a fiber supplement regularly for a month or so and drink plenty of water. See your dr if pain or bleeding persist.