I cheated and also ended up being without hCG 4 days. Should I just resume the HCG tomorrow without loading?

Logistically, yes, you can just start fresh tomorrow, no loading. Just maybe be sure that you are ready for that fresh start to stick to it- it’s better to just take a break entirely for a while if you think you might continue to deal with cheating right now- sometimes we need a real break for a while before coming back fresh enough to stick to it again for a while. Up to you of course!