  We consider the role of quantum effects, mainly, Weyl anomaly in modifying
FLRW model singular behavior at early times. Weyl anomaly corrections to FLRW
models have been considered in the past, here we reconsider this model and show
the following: The singularity of this model is weak according to Tipler and
Krolak, therefore, the spacetime might admit a geodesic extension. Weyl anomaly
corrections changes the nature of the initial singularity from a big bang
singularity to a sudden singularity. The two branches of solutions consistent
with the semiclassical treatment form a disconnected manifold. Joining these
two parts at the singularity provides us with a $C^1$ extension to nonspacelike
geodesics and leaves the spacetime geodesically complete. Using Gauss-Codazzi
equations one can derive generalized junction conditions for this
higher-derivative gravity. The extended spacetime obeys Friedmann and
Raychaudhuri equations and the junction conditions. The junction does not
generate Dirac delta functions in matter sources which keeps the equation of
state unchanged.
