Yes please try to take picture of syringe
The line may not be numbered with a 1 but it should be the first mark on the syringe unless you have a syringe with half unit markings
one unit is a small amount
okay - that's great - so 1 unit is the first mark after the zero line that is closest to the needle- there should be 5 marks and then the number 5 - that means 5 units - It is just a tiny amount
Does that make sense? Do you have any other questions?