Terrible abdominal pain, blood in stool?

Yesterday, I decided to eat ramen noodles early for lunch (not good, i know but I'm broke) and then for dinner I made biscuits and gravy. Awful mistake, both because I'm lactose intolerant and I've been in the bathroom for 6 hours now because I have diarrhea.

Typically, I can just go to the bathroom, take some tums and sleep it off. But this time, the pain in my guts is intense and I have light blood in my stool, and the pain is keeping me awake. And no matter how much I use the restroom, the pain like I need to go doesn't go away. I don't really feel nauseous, but it feels like if I threw up it would help. Even if I have nothing on my stomach at this point.

Any need to be worried? If so, should I go to a doctor? If not, what can i do to help my situation?

I would go to the Dr just to make sure everything is ok. See a gastroenterologist and I know you said you’re broke but try to stay away from super fatty foods as that can cause worse problems until after you get it figured out what’s going on. Blood in the stool is usually a sign something is wrong but it could be something harmless like hemorrhoids so I would suggest going to a dr just to be safe.