Have A Quick Question. I Was Laying Down With My

have a quick question. i was laying down with my mom and sister in the bed. i was all the way at the wall and my mom started to hug me and bother me and coming closer to me. i started to tell her i couldnt breath but she didnt get out because she didnt have her hands anywhere near my face after a few seconds i started to cry and had short breath why? why did this happen