Calm down, don't panic.............lol.......

I do not think for one moment it will be the head, just start at the beginning and check levels, sender etc.

I changed the oil on my old Senna last week, I noted on re-filling her she took less oil than usual but the level was perfect even after running the engine and yet 2 days later the oil suddenly settled and she needed a good top up.

If it does turns out to be a head I have 2 completely refurbished ones heres complete and ready to fit. New guides, valves, rockers etc. Drop me a PM if you get desperate.