Im quite scared rn because last Friday evening my stool had a lot of red bits in and turned the toilet water reddish too so it could have been blood. I haven't had any blood in my stool since then but I've had weird symptoms such as losing my appetite and stomach cramps. This morning I had really really bad stomach cramps for maybe 5-10 minutes but after I had a bowel movement they got better. But I was quite concerned because it was just so painful, I've never felt anything like it before. I'm scared its something serious, I'm only 18 but I am very worried rn.