Diagnose me please

Hi, I’m 16 years old and I have been experiencing some symptoms recently and I’m afraid it might be colon cancer. Back in August 2024 I had severe stomach pain for about 2 days after which it never came back again. However after this I noticed small spots of red blood in my stool which come and go. I do not have unexpected weight loss. I get a type of pain/cramping on the left side of my stomach some time after eating. I also feel a slight weakness in my legs and my muscles in my legs are currently sore which idk if it is fatigue or not. Can someone please diagnose me?