old wives tail were babies are sensitive to pregnant women. my baby nephew wont come near me, when he used to.

nephew won't let me hold him, cries when i am near him, when before he loved to play with me.He will give me kisses but will throw a fit if i go to hold him. he is 17mths, now. His 3 year old sister loves me, and had no issues with me. My husband and I have been trying, so is this wishful thinking. My sister heard that when she was pregnant with her girl and was holding a boy that that was a sign of what she is to have, if the boy acted up while she was holding it. Please let me know...if you do!