If it is hypoglycemia, which I tend to doubt, 2 hours after meals is the least likely time. More likely is first thing in the morning or right before you are due to eat a meal.But if you are taking your blood sugar when you feel the worst and it is not low, then obviously something else is going on. I'm sorry I'm not a doctor and couldn't begin to guess what it all indicates, and not even sure which forum would be useful to ask.
My main concern is that when you are talking about accelerated heart rate, chest pain and difficulty breathing that it could be cardiac related which really should be ruled out ASAP.
After re-reading my post, I realize that it was very confusing. I have had type II diabetes for 5 years. The only medication I stopped taking was Lexapro. I took 20 mg, and under physcian directions cut into 1/2 for a month. I stopped completely approximately 2 weeks ago. I had no serious symptoms, mostly just a slightly higher level of irritability. I started feeling sick on Saturday (fatigue and general malaise). By Sunday I felt flu-ish. Monday I felt better, but still fatigue and generaly blah but started feeling dizzy. By Tuesday morning my lips were tingling and feeling kinda numb - really it's more like my whole face, but most noticeable in my lips. The dizzy sensations were more pronounced, and I had a pain in my side that I was afraid might be the beginning of a kidney stone pain. Then I noticed that it hurt worse when I took a deep breath and so thought it might just be a pulled muscle (I do have 3 kids that like to be held). The pain kinda spread around my whole midsection: abdomin and ribs. When I got home, I felt very flu-ish again and had a low grade fever around 100. From that point forward I have not had a fever, but have had the tightness in the chest in the sense that when I take a deep breath I can feel it like after a hard run, and I've had the accelerated heart rate. I may have had the accelerated heart rate previously, but didn't think about checking it. The thing is I know stress just adds to it. It is just really frustrating because I didn't know what to do about it except try to rest and relax. The reason I'm asking about how to check for the hypogycemia is that I didn't know if it is the same as checking levels for regular hyperglycemia, or if I might need to test under a different time frame (other than 2 hours after a meal). Again, these symptoms have been constant, they have not stopped or paused despite sitting, resting, and irregardless of what I ate. I just don't want to keep feeling this way, but if it's symptoms of withdrawal, I would rather deal with it than take the Lexapro again.
Your situation is complicated by the other meds you are taking, or tapering off of, and I don't have any recommendations for that. In terms of lows, however. If you have symptoms of lows, test your blood sugar. If you are under 60, you need to treat it. (Some people treat under 70). I would suggest using glucose tablets so you don't overtreat the low with good tasting sweets. I take 2 of them, you may need the same or more, we're all different. 114 is not a low reading, and food and drinks take between one and 2 hours to raise your blood sugar.
Re-reading your post it sounds like you have these symptoms all the time and your blood sugar is normal. The only thing diabetes-related that accounts for that is if you have been very high for awhile then you feel low at normal blood sugars until you get used to them. So my guess is something else is causing these symptoms. If you are experiencing tightness in the chest I would be concerned about this and recommend an emergency clinic or something just to make sure it isn't heart related.
Low blood sugars do not necessitate immediate medical help if you are conscious and able to treat them yourself with glucose tablets or other fast acting carbs.