When I feel like shitting, I go to the toilet and I sit into the toilet seat and then I shit.
OP has mentioned that he or she feels like shitting, since 1 week and that is awesome, but OP does not know what to do !!! 1 week : what a state of constipation. I suggest that OP looks for a toilet and enters the toilet, sit on the toilet seat and simply shit into the toilet seat. It is quite a simple process, nothing in it to "deal with it". Feel like shitting ? Just be bold, don't feel shy : Just go and shit in a toilet. No need to wait for 1 week, etc, make it a habit to go and instantly shit whenever you feel like shitting.