If you're healthy, neither enemas nor meds/"cutting out" of insides are advisable. But, several months of bloody stools = not normal. I hope for the OP that this is not crohns/ulcerative colitis, but as others have alluded to- it is among the leading candidates.
I'd also hope you (here's good advice for you) never get either of these diseases- they can be pretty terrible. But, if you ever do get so unlucky, you'll be so thankful that there are a multitude of increasingly effective medications.
It's very easy to sneer at medications/surgery when you are healthy, and need neither. And, to be fair, some in the medical profession have complicated things by over-diagnosing, over-treating, and over-categorizing things as "diseases", which certainly erodes trust.
Many of us are trying to push back against this by doing research into the harms of excessive medical care (whether it be unnecessary statins, unnecessary antibiotics, or unnecessary prostate biopsies- to name a few). One of the leading medical journals (Archives of Internal Medicine) has a very nice series entitled "less is more"- devoted to research that points out the costs and harms associated with over-zealous doctoring (one of my papers under review there currently).
Ultimately, the elephant in the room here (and what drives a lot of the distrust like that seen here) is that the majority of physicians are paid under a fee-for-service plan- i.e., do more, get paid more. And that is of course a powerful driver to do more. Hopefully, that will change, but there will be powerful push-back from the specialties that "do" more (compared to specialties that just think). I personally love being in a salaried system- I get the same pay whether I see 5 patients in a morning's clinic, or 10. So, I find myself often telling patients to not see me for follow-up, to just give a call if there are unanticipated problems. Would I do this if it hurt my bottom line? Or would I tell them that "well, as long as you're on this antibiotic, I should see you every month". These are the insidious ways the current payment method drives up the cost of care, and erodes trust.