Question

a good friend of mine was on the pill for awhile and hasn’t taken it for almost 7 months now, she’s been actively trying to convince and has had ZERO luck .. i feel really bad for her because i know how much she wants a child. do you think the birth control is still in her system? or should she be concerned about her fertility. also what are some tips/tricks that seem to increase the chances of conceiving (if any exist)