Re: When did your LO start teething??
My daughter's first tooth broke through (bottom right, center) on February 24th... 7 months + 4 days. Her second tooth (bottom left, center) broke through yesterday.
Teething is largely genetic, so if you know when you or your DH started teething that'd be a good indicator.
I got my first two teeth (bottom... same two that DD has now) 2 days before I turned 8 months old. And my next 4 teeth (top center and on either side of the two bottom) 2.5 months later.