Pregnancy chances

Latoya • Ttc...just got off birth control in March. I have a 17 yr old son from a previous relationship. My future husband and I both think now is a good time. Im 32 and we want to try for two babies in 5 yrs.
No matter what info I log into glow it only gives me a 2.7 chance of conceiving... I know its not perfect but I think it should be higher than that... Any ideas ladies..thanks