Knees bent inward + bad knees = ?

my knees are bent inward. they have been all my life. only recently, i found out how much of a burden they are. i can't wear skinny jeans or leggings, because you're able to tell very well how bad my knees actually go in. it's embarring. on top of it all, i have bad knees, partially because the amount of times i've fallen on them and my genes. my mom has bad knees(she's had surgery on one of them), as do my siblings. they hurt after i excersize, after i've stood for a really long time and i got to bend them. is this something i should get checked out in the near future?