 [ Symptoms ] can you get pregnant switching from depo to the pill i was on depo for 9 months i went off of it for 1 month then went on the pill i had a sexual experience within the first packet of the pill is pregnancy a possibility [ Disease ] pregnancy is caused by sex obviously and no birth control method is 100 other than sterilization and complete abstinence so yes it is always possibility when in doubt or changing birth control methods it is always a good idea to take a second form of birth control for the first month like condoms