Advice needed - proctitis to inflammation in sigmoid colon

Hi
Just hoping for a bit of advice. I was diagnosed with proctitis following a flexi sig in Jan 2016. Following a course of prednisolone and mesalamine this completely cleared up and I was symptom free for the best part of a year. By Jan 2017 I was under a lot of stress and on a trip to India I picked up a bit of a dodgy stomach and started noticing bleeding again. I quickly started to feel very poorly again (lots of bleeding, lower back pain, feeling very tired and generally just unwell). Went to the GP who tested for infections (which came back clear), referred me to gastroenterology and started me back on the mesalamine enemas.
By the time i went to the appointment the enemas were working well and I was feeling a lot better. They did a repeat flexi sig and everything came back normal. The GI said it was highly unlikely this is IBD because the biopsies were all clear.
So he sent me on my way with no treatment but within a month or so I was developing symptoms again and started feeling really unwell, with lots of back pain and passing a lot of blood. I also (and I don't know if this is related) developed psoriasis for the first time in my nails and scalp). The GP did another faecal calprotectin test and this came back quite high (over 700). She referred me back to GI and put me back on the enemas.
They referred me for a full colonoscopy. Again by the time they did the procedure the enemas were working and the symptoms had settled a bit and the bleeding had gone although I still wasn't feeling quite right. The scope showed that I now have patchy mild inflammation in my sigmoid colon. My rectum (where I had the initial inflammation a couple of years ago) was normal.
I am still waiting on the biopsy results but concerned what to make of all this. If the inflammation is not caused by IBD is that possible for the inflammation to move like that?? Can anyone offer any thoughts around this? Presumably i am just going to have to wait for the biopsy results. I am worried now that whatever is causing the inflammation it has spread. Thanks!

Hi thanks for the reply. I had stool tests done back in January and they all came back clear. However the gastroenterologist I saw who sent me for the colonoscopy said he didn't think it was worth doing more - he said if it was caused by an infection that they generally wouldn't treat bowel infections as they are mostly self-limiting (unless it was c-diff)?? If it is an infection it doesn't seem to be that self limiting as it keeps on coming back! think if the biopsies come back clear then its possibly worth trying to push for more stool tests?? It would be good if they could actually work out what it is and treat it. Thanks for your reply anyway, think I'll just have to wait for the biopsy results and take it from there.

I am surprised that you were not cautioned of Sigmoid/Left sided UC at the time of proctitis diagnosis. When I was diagnosed with proctitis, the GI warned me, within a year or two, you are going to get UC, hopefully, it will stick to the sigmoid region only if you are religious with the drugs, and thats exactly what happened. Late 2008 Proctitis, mid 2009 UC.

I doubt, it has anything to do with your India trip but certainly related to the stress. I was also under tremendous stress during this period.

If I have to do all this over, I would say, get the inflammation down, by hook or by crook but once you are settled, study religiously the kind of diet you are eating, research gut flora, reduce your stress, include soluble fibers and then insoluble fibers in your diet. Make sure that the fiber in your diet increases significantly (during remission).
Also, go through the old posts and literally make a list of what benefits people. There is so much individual variation in this business that nobody can make a concrete statement, trial and error is the only way.