  In this work, an Effective Field Theory (EFT) incorporating light
SU(3)-flavour and heavy quark spin symmetry is used to describe charmed
meson-antimeson bound states. At Lowest Order (LO), this means that only
contact range interactions among the heavy meson and antimeson fields are
involved. Besides, the isospin violating decays of the X(3872) will be used to
constrain the interaction between the $D$ and a $\bar{D}^*$ mesons in the
isovector channel. Finally, assuming that the X(3915) and Y(4140) resonances
are $D^*\bar{D}^*$ and $D_s^*\bar{D}_s^*$ molecular states, we can determine
the four Low Energy Constants (LECs) of the EFT that appear at LO and,
therefore, the full spectrum of molecular states with isospin I=0, 1/2 and 1.
