Unknown feelings

I had a great experience last night. It was my spouse's sisiter wedding party.
During the celebration, I discovered that I feel to bea great loser! I was surprised because it was the first time that I have had such emotion.
I felt I have been a loser in my life after the marriage. I always respect my spouse's parents and they love me so much but last night I thought why I forgot many things during my marriage which are related to my husband's family? Why have I sacrified my feelings in order to gain their respect and attention. I am simple woman without any luxury needs, but why they have not done something for me thought they are not important to me?!
The explanation of this matter is not simple especially in another language! Because It is really the first time and my feelings and emotions have not made as the words!
I felt I was damaged. Now, why? Why I felt it last night? What happend last night?!
I think I gained the oportunity to compare my spouse's family behaviours in adding somebody new to their family with hers! Yes, and I, I emphasize I, was jealous of her!
And I discovered I cannot forgive them because of a lot which have not offer to me...
It was a strong feeling of detriment, lose and harm...
Last night was the first time that I felt the special style of feminine jealousy and I cried in myself because I percieved that I have been desereved more... Actually more...