Stick with what your nurse told you. People on here are not supposed to give you medical advice.
@LauraC27
What I try to do is consider what my nurse/doctor says to do, and consider the suggestions, ideas, and experience of what people say online, then if I can I discuss the options with my nurse/doctor and reach a decision for myself, or if it's a relatively minor issue I don't need to check with them and I decide on my own.
Both health professionals and people online can be wrong. As you get more experience managing diabetes, it will become easier to figure out what is the best thing to do in a situation.
Some online suggestions are more reliable than others. The factors I look for are: does the suggestion make logical sense? how many posts and likes does the person have? What do I know about their experience from the info in their signature and elsewhere? Did they provide links to any supporting information or references? Are other posters generally supporting or challenging what they say?
But if the problem is urgent or serious then I go straight to a professional, through calling a helpline or seeing them in person.
A professional has the advantage of their training, knowing more about you, being able to examine you or see all your results, and being able to provide treatment and observe what happens next.
People online have the advantage of time to ponder an issue, several viewpoints to consider it, and in some ways, better access to details about how you have been doing. They also know what it's like to live with diabetes and use insulin or drugs. This can be really valuable.
In the end, I think in the forum we are all just trying to increase our knowledge and help others build their knowledge, which is a good thing.