Welcome to the forum, @glucel! Are you still consuming dairy?   About half of people with Celiac Disease also react to dairy.  Dairy products can make antibody levels rise. More importantly, vitamin deficiencies occur after surgery.  Anesthesia can precipitate a B 12 deficiency because nitrous oxide used in anesthesia can irrevocably bind with the B12 making it useless.  Thiamine deficiency can be precipitated by surgery because of increased metabolic demands when ill.   Deficiencies in these vitamins can cause constipation and "senior moments".  Do talk to your doctor about checking for nutritional deficiencies as part of proper follow up care for Celiac patients.  Supplementing with essential vitamins and minerals can boost your absorption of these nutrients.  Most Celiacs are deficient in the B Complex vitamins, Vitamin D, and minerals like magnesium, iron, and zinc, all important in repairing and healing the body.   Keep us posted on your progress!

If your husband is 100% gluten-free going forward, any fertility affects caused by untreated celiac disease should disappear, it's very important that his diet is gluten-free. This article has some detailed information on how to be 100% gluten-free, so it may be helpful (be sure to also read the comments section.):    

I agree with @trents and your low total IgA means that your tTG-IgA would have been higher--and you already mentioned that it was a "weak positive." A weak positive is still a positive test result, so the likely next test would be an endoscopy to confirm celiac disease.  This article might be helpful. It breaks down each type of test, and what a positive results means in terms of the probability that you might have celiac disease.     

I believe you meant that your tTg-IgA levels went up even though you've been on a gluten-free diet, is that correct. If so, are you sure you understand the gluten-free diet fully? This article has some detailed information on how to be 100% gluten-free, so it may be helpful (be sure to also read the comments section.):    

Yes, I do.  Handled carefully, the bags of flour should not be a problem.