Now I thought about this while writing my "electric field strength ' question , as it was about has the electric field got an upper limit of strength and the answer is that it hasn't (theoretically) then I thought the same thing about gravity. Does gravity have an upper limit to it's strength or how strong it can get in a given area? Now before I let you answer i want to express some of my thoughts that ,as much as I know according to GR it shouldn't have one but I'm not sure what QM has to say about it. Theoretically shouldn't gravity have some kind of an upper limit which is dictated by the laws of QM , because as to my understanding ( maybe i'm missing something) if gravity would not have an upper limit then shouldn't a black hole keep on forever decreasing in size , even though as we know that gravity is the weakest of all the 4 forces in a black hole due to the mass present and the density of it gravity exerts a huge force on every other bit of mass thus creating a BH. But once gravity has taken over the fusion /radiation pressure and all the other pressures left over from a star that has ended it's life cycle , shouldn't the gravity then continue to forever compress the matter that now forms a BH? Because if there is no upper limit for gravity then there also shouldn't be no stopping once it has taken over to the extent to which it doesn in a BH? Ok these are my thoughts , now what's missing?