I am so sorry Roni, I know how hard it is. I still have a tender place in my heart for both my dogs that have passed even though it has been years and years. It does get better, but you can ALWAYS remember them and if you need to shed a tear even in 10 years about it, it is ok, and perfectly natural.
That was very thoughtful of your mother to send you those flowers, what a wonderful heart she must have! It is the people that love us that help us get through those tough times, so I am so glad you have her.
I am sure your fiance just didn't remember. Guys aren't usually like that. I can barely get my husband to remember my birthday and we have been married for 2 years, and together for 6 (since right before I was 21). On a lighter note, I am anxious to see if he remembers it next week.
I really am sorry, and I know how hard it is. It is ok to cry all you want and to be upset. Our dogs are like children to us, so it is perfectly natural to mourn them. If you need to cry anymore, feel free, I will be glad to listen.