The BH does not indicate when you will actually go into labor.
That being said, the typical timing, per when a Doctor will excuse a person from work... is usually at 2 weeks prior to their due date.
Braxton Hicks... will be more noticeable... when over exerting yourself, straining yourself, standing for a long time, when stressed, when not drinking enough water etc. When having the BH, then you should sit down. Stop and rest, DRINK water.
Next, when a woman's belly "drops".... that means that labor is forthcoming... but not IMMEDIATELY. When a baby starts to descend... and your tummy then 'drops'... and seems lower... then, that is the baby getting ready... to come out.
That is more of an indication... than Braxton Hicks.
I had tons of BH with both my kids, while pregnant.
But it did not determine, when I went into labor.
all the best,
Susan