Type one is an autoimmune condition ie the 'body' attacks it's own beta cells and kills them. This happens when it mistakenly sees the beta cells as an invader. It produces antibodies to get rid of it, just as it would produce antibodies to a viral infection.
That's where he's coming from with the virus suggestion. Something has to trigger the antibodies and trigger the autoimmune reaction , one persistent theory with many papers written about it is that one of a group of viruses does this.. It's far from proven but I notice that there have been a lot of papers about it in the last couple of years such as this one reported here
http://www.sciencedaily.com/releases/2013/10/131022091721.htm
Whatever the trigger the normal tests are not for viruses but for antibodies and the most frequent antibody is for anti GAD which is a blood test most often given to distinguish between T1 and T2 (there are other antibodies but this is by far the most common in adult onset T1)
Whatever the type, since you are on insulin then you do need to learn to use it. I'm not sure how long you have been using insulin but for obvious reasons they do tend to start with conservative doses and if necessary work upwards.
What is helpful is to really keep very careful records of what you eat with the carb count,(and weigh, don't guess) how much insulin you take ,the levels before and 2 hours after eating and the levels at bedtime and first thing in the morning. (Oh and any exercise you do)
Putting it simply (probably too simply)if your glucose has risen outside your target at the two hour postprandial reading then it maybe that the amount of insulin you take for each 10g of carb is too low.
If on the other hand, you find that the levels are rising overnight or in the period before the next meal , then your basal may need adjusting.
At the moment though, it's recording and hopefully being in contact with a diabetes specialist nurse who can advise on adjusting doses/ratios