Terry,
You must be heavier than I was led to believe. Or at any rate, I think there is hope for your mobility on planet X if there is ever a cultural exchange.
If the planet is 14 times as massive as Earth and the same density then its radius increases with the cube root. That makes it 2.4 times the diameter or radius. Surface gravity is inversely proportional to radius squared. So I get 2.4 times as heavy there. If an individual weighs 150 lbs here, then they ought to weigh 361 pounds there. Not too comfortable, but in the age of obesity, there are people here on Earth who might have weighed 150 lbs a century ago, but are carrying something like that now. Call it a variation on the generation theme. But to illustrate: Saturn is 95 times more massive than Earth, but owing to relations like that and lower density, the surface gravity is about the same. Jupiter is about ten times as wide, denser than water and about 330 times as massive as Earth. Surface acceleration, if I remember right, is about 2.6 gravities.
I do see a report that one of the so-called candidate habitable exoplanets has vanished from the list. Apparently an artifact of observations. More details should appear in the journal Science in a week or so.
Oh, yeah. The issue with the period of nine days? The exo planet is not going around our sun, but another one out there. It's different in that it is less massive and less luminous. Luminosity drops off faster than mass. Mass luminosity relations are about third or fourth power. But the consequence of that is that stars with low luminosity last much longer too. It's one of those places that you don't have to worry about the lights going out before an eternity with the GB will end.