so i re calculated everything,
forrest got his first (professional) job at: 19
met andy: 20
andy and forrest dated for six months before andy got pregnant.
6 months + 9 months = 15 meaning forrest was 21 when Ainsley was born.
Andy died when Ainsley was one year old meaning they spent another year together so Forrest was 22.
Ainsley is now five meaning four years have passed since he died meaning that forrest is currently 26.
[breathes heavily] Forrest is turning 27 this year.