I had blood on my finger last night from my nose and I fell asleep thinking I would pak my hands in the morning. In the morning I forgot to pak my hand and just went to do wudhu and prayed fajr. I just realised right now that I hadn’t made my hand pak. I also don’t have any blood left on it. Is my namaaz valid? And do I still have to pak my hand? And if I do, does that mean I’m now Najis all over cos I did wudhu without making my hands pak?

Since you washed your hand for wudhu, it became clean, and this is enough.