As the others have said, the 1 hour test is not a great indicator because it is influenced by what you have previously eaten ie the 50g sugar load can in reality be higher depending on what you have eaten prior to the test. Only about 10% of people with GD end up on insulin, the rest can control it with diet so even if you do have it don't assume the worst. There is an option of insulin tablets as well if you have the right doctor.

Is your porridge the proper stuff or those instant sachets? The instant ones are bad for spiking BSLs.

Google Glycemic Index, it will give you an indicator of things that are low GI which keeps the blood sugar levels more stable instead of the peaks and lows you get from high GI foods.