Mine is offset to the right. Sometimes it seems like the opening is toward my lower hip, not straight down. Even in low position, the opening is still very much to the right. I would guess if straight down were 0 degrees, it's usually about 45 degrees to the right? I guess from the little diagrams I always assumed it was a straight up and down thing, but of course nothing in our bodies is that simple. I also noticed by checking CP while TTC this time around. I do have a DD and we TTC for 18 mos. before I got pg w/ her. My dr. never mentioned anything about my cervix being tilted, so I've wondered if it's common so he thought nothing of it, or if maybe having my daughter somehow shifted its position.
Sorry, I have no solution, but you are not the only one. As for the leg relation, I don't know. I have noticed since having my DD, when I have my period my upper legs and lower butt hurt, but I dunno what that's all about.
Good luck in your TTC!
"I'm so crafty, I make people" DD (01/06) and her much anticipated sibling (07/10) with my sweet DH (07/02)