I have battled hypoglycemia in the past. What I did to help understand what the different feelings meant was to constantly take my blood sugar and record it. Eventually I could trust that I understood how I was feeling and what it meant was happening in my body. When my blood sugar has been out of whack (meaning I have not been eating correctly) my body will respond with a stronger response. If it has gotten used to being high (because of too many carbs or sugar) then when it lowers to a respectable number I may feel like it is low only because I have gotten used to what it feels like when it is high, if that makes sense. Once everything evened out I could tell you if I was in the normal range of 70-100 (what I was told to stay within), anything below that came on hard and strong for me and was unmistakable.
I have also noticed that if my sugar is too high I can sometimes mistake it for being low. That is the headache, blurry vision, etc, though when it is really low I get the shakes/tremors in my hands. It could be that right now you are still just trying to find your new neutral and understand how to get there and what it feels like.
My best recommendation is to just start recording your numbers frequently throughout the day, what you have eaten and when you ate to start figuring out how everything affects you.