New to readings

[Sean edward]

This morning I took 12 units of insulin at 0500 I then ate bowl of rice crispies .At 13.00 o'clock I had a subway 6 inch tuna and cheese melt ,4 Greg's sausage rolls and a sausage cheese and bean melt then a chocolate chip cookie and some dairy milk chocolate along with 6 units of NOVA RAPID my reading didn't go above 9.2 and soon went back down to 5.8 ??.Yet yesterday I ate around 10 digestive biscuits and rose to 12.7 I can't get my head around all this .all this sounds like I should look like jabba the hut but sometimes I just drink water for 2 days and exercise.