boy-wonder

Hi, new member.
About me,
I had been suffering with weight gain, bloating and irregular and extreme bowel habits for a year or so. For example, I went on holiday in 2023, then again I  2024 at the same time of year and every shirt I wore in 2023 didn't fit anymore, couldn't even do the buttons up. Being in my mid 50s I put it down to age and middle aged spread. I'd been lucky all my life having good metabolism and being able to eat anything and as much as I like without putting on any weight, it drove my other half mad.
Over a conversation with a friend health and age Related stuff came up and he mentioned someone he knew who had recently found out they were gluten intolerant,  I looked it up and had every one of 8 or so symptoms listed. Bloating,  weight gain,  headaches, brain fog,  constipation, etc etc.
I took the decision to give going gluten free a try. Within 1 week I had lost 4 lb, now 7 weeks in I've lost 13 lb. I feel much better in general,  the bloating has severely subsided, it used to keep me awake at night as I felt so uncomfortable. 
So pretty much a success story, as everyone here knows,  going gluten free isn't always easy, and eating out can be awkward,  but I consider myself lucky that I appear to have an intolerance rather than an allergy or being celiac.  I can deal with most of the gluten free options at the supermarket but, the big one for me is bread, I love bread, and the gluten free options I've tried are pretty poor. I was at a posh black tie event last night and chose all the food options I thought would be gluten free,  however,  there was bread on the table and I couldn't resist it, I had I small piece of bread,  god it was good, I wanted more but I resisted. Today I feel a bit dodgy, my stomach is churning, and I generally feel a bit urgh. 
So here's the question, is that really down to 1 small piece of bread or is it coincidence? 
I'd be interested in hearing how other people have reacted to a similar situation,  as I was considering having a day off every now and then and enjoying some lovely fresh bread.