Do you have enough novorapid to get you through to wednesday? If not, is there an out of hours number to call? I don't know how things work where you live, but in the Netherlands there are emergency pharmacies for weekends and nights and they definitely have novorapid. They also don't want to be responsible for people ending in hospital because they denied someone needed insulin.
If all else fails, a shout out in a local facebook group (whatever type of group, as long as it's local and has a lot of members) may work.