Big Change in BS What could it mean!

Hi All, I have noticed recently a change in my daily BS although I have laid off checking so much since the early days as I kind of know my stuff now. I not to sure what it means but I'll give 2 examples.
A bit naughty the other week (1st time in six months) I have some choc sponge cake, choc custard, after a white pasta meal. My young son made this for fathers day at school, so I couldn't refuse. I put my BS up to 10 but within 2 hours it was down to 4.7.
Then this morning I was on the hungry side so for breakfast at 6; I had 1 pink grapefruit, 45g of Aplen with milk, then about 20g of almonds & 25g of roasted peanuts. I don't know what my peak was but 2 hours later I'm back to 4.5. My last hba1c was 5.3.

I haven't felt so since I was diagnosed and it now looks like I have very low testosterone levels which they are looking into.
Could this have been the cause of my high BS in the 1st place.

I am on 2 x 500 Metformin. I call 10 high because I aim to keep below 8 as much as possible. I do this by not eating anything produced, except smoked fish & this week Alpen. Fruit in moderation seems to be ok, I'd take a 100g of raspberry's over the space of a few hours, allowing me to get the health benefits without the hit. I have found that portions are the 1st key, careful carb selecting the 2nd & a clear defined reward where applicable the 3rd.

The RGDA on packets; most of us know are based on the female intake but I think we are better of to stick with that figure as a max. Look at the portion 1st rather than the rest of the figures. Take a carton of those homemade types of soups popping up in the shops, looks like a healthy choice, that carton serves 3 people and a normal tin of soup serves 2 people and still that is providing the rest of your daily intake is supportive of that meal. The new special K with 3% fat is based on a 30g portion inclusive of milk, you can count the flake in the bowl. Most people would have a bowl or when being good half a bowl.
That now explains why I was high with porridge during the winter; I was eating a bowl not 25g, eat 25g its no big deal (For me) not that filling so I'd have an omelette some days without the egg yolks, maybe add some tomato, celery, radish. One great hunger quencher I make up is a tea from fresh ginger and a pinch of cheyenne pepper.

That is why I don't call what I'm doing a low card diet / lifestyle. What we now consider to be of normal carb intake is in my opinion hugely excessive. This is the BS bit, 1 piece of my over all health, I was told that I needed statins, my cholesterol was at 6.4; three months on and it's 5.0 @ 2:1 ratio which is pretty darn good I'm told.

I'm finding that by getting each little bit into check the whole picture is becoming so much easier to manage. Re education which is quite hard due to the norms of our surrounding. You only need to look at an 80's pop video to see the shape of people from the past, now what do we see?

I just hope some of these words help someone, these are my opinions based on myself are in no way designed to upset or offend.