Hi, im new here ad i wanted to know if someone could help me interpret my dream, cause it was very nice but it made me miserably lonely to the point that i woke up with tears. I currently life abroad wich explains a bit about my dream.

I dreamt that i was back home, but apparently a couple of years had passed without me noticing, so i meet my 23 year old sister who tells me shes getting married now, she looks radiant, and tells me shes been engaged for over a year, which i dont remember, and that shes pregnant and shows me the ecography, and i am so happy i cry of joy. than she tells me my little brother and sister are great (my dads kids) and that my motherīs baby is so big now (my mother does not have a baby), and i dont remember that i have this new little brother called "Sergio" who is 2 years old, and when i see him he looks exactly like my mother as a child, and i cant stop hugging and kissing and playing with him, also crying of happiness, but also of guilt, because i didnt even remember him, and i saw everyone living these beutiful lifes with their own families and i am so happy for them but at the same time i feel so lonely and sad and guilty for being away.
I miss my family but i dont feel guilty for living abroad and dont feel specially alone.
please help me decipher my dream, i woke up crying and with all these mixed feelings...