Patio excavation site waterlogged
So over the wekend I painstakingly excavated part of my patio site to a depth of 7inches with a gradual slope. Overnight it rained and will continue to rain all week (note to self: always check weather forecast). The site now looks like a paddling pool, I've got heavy clay soil/DIRT . When it dries out do I need to do anything to combat the waterlogging? Is this normal? I plan on using DIY pathmate paving mould to lay the patio with 4 inches of MOT subbase underneath, do I need to consider digging deeper and adding layer of sand after subbase? Or will subbase be sufficient?
Would appreciate your thoughts on this please.