Hi and welcome.
Sorry to hear that you are feeling unsupported, especially after you have been started on insulin as it can be a tricky time. Sadly, it is becoming a quite common theme here on the forum as NHS resources are stretched.
Can you tell us the full name of the Humulin insulin.... it is often followed by a letter or letter and number, like I, S or M3.
When did you start on the Ozempic? Was that the same time as the Humulin or before and did you start to feel rough before that or after. Is the Ozempic to help you with stalled weight loss and did you start on a low dose and then increase it and if so what dose are you on now? It seems a bit odd to start you on Ozempic and insulin at the same time but I am no expert on Type 2 medication, so perhaps it is a recognized pathway.
@gll I think has more knowledge and a link to a flow chart for Type 2 medication which might be helpful.
Can you clarify what you mean by feeling poorly? Is it nausea, which I believe is a side effect of Ozempic or are you perhaps suffering false hypos where your BG levels are dropping suddenly due to the insulin.
I agree that a free trial of the Freestyle Libre would be a good option to give you more info. Following a low carb diet can be tricky whilst using insulin so being able to track your BG levels more closely with a sensor might give you more insight into what is going on. As a Type 2 diabetic you qualify for the free Libre trial providing you have a compatible phone, so definitely look into that option.