Ftm lots of questions...

Itzel • In love with the most amazing man, Expecting our first baby in Oct <3

So I know I should call my doctor... but before I do I wanna know if any of you have gone through this..

Every time I walk, lift my leg up (taking off socks or putting shoes on ) , or even bend down I get this excruciating pain in between my legs but up all the way near my vag.. also in my lower back., could this just be normal growing pains? I'm 18w2d baby is 18w6d .. TIA