<human>: Provide a brief overview of the text.

Hi! Caucasian 24/F, 5'9", 190lbs. Currently on Plaquenil and Baby Aspirin for mild Lupus, and Loratadine for all my sniffles. This has all been discussed with the pre-op nurse, as has the specific question I'm about to ask, but I just wanted to see what you guys think. 

I have a colonoscopy (my first) coming up this Friday. My GI is pretty sure it's just an internal hemorrhoid giving me a bit of rectal bleeding, but given my autoimmune history and long history of mild IBS symptoms, he wants to evaluate. When I discussed things with the pre-op nurse, she asked about my recreational drug use, and I was honest in saying that I'm a regular smoker - but she sort of skimmed over it and didn't seem to listen. The only comment she made was "discontinue recreational drugs 48 hours before your procedure," and that was at the end of the conversation. Does this seem right to you? I'm nervous that I should've stopped a while ago, but then again I've seen some r/trees posts about people going right up to their appointment time. I've put a message in to my actual doctor - not just the pre-op nurse (even though I'm sure she is fabulous!) - but he hasn't gotten back to me. Any insight would be greatly appreciated, and thanks so much in advance!
<bot>: Is it okay to smoke marijuana up to 48 hours before a colonoscopy, or should it be cut farther in advance?