I have a huge problem related to my brain?

Day before yesterday i saw a picture of my cousin and thought i would be invited to her marriage soon,IT HAPPENED THE VERY NEXT DAY.My mom told me about her marriage yesterday.Its not like it was obvious dat she was getting married,for last 1 year i had not met her.I just saw a picture and d thought of her marriage truck my mind.Is this normal?Dejavu is also very common 4 me.Pease suggest something. is this normall?