Yesterday my sugar was 260 before supper at 5:15 pm so I took 4 units at 5:15 like the scale the Dr gave me said. then at 7:23 it was 274 and at 8;12 297 up not down and at 10:04 it was 331 then at bedtime 11:14 it was 262. I took novolog flex pen exp.12/2015 on pen. don't understand way it's going up for 5 hours after shot. in the moring it was105 at 8:05 am never took insulin before what is going wrong ?