Help, feeling light headed.

So started feeling light headed and harder to breath minutes ago. (Had eaten a bowl of vegetables in soup an hour before.) It feels like that feeling you get when you lay on your back for too long in late 2nd or 3rd trimester. Only i was sitting straight. (I just found out i have GD 2 days ago and my first appointment with my diabetrician is next tuesday. So as of now, am just using information i get here and there to keep my sugar in check.) So i told my mom am feeling dizzy. She knows about the GD so she told me it is low sugar. I tried to explain that it feels like when i feel when i sleep on my back but she thought am just arguing. Also my dad had his tool to measure my sugar this afternoon when i told him i have sugar. he measured before i ate and i had 97, which is apparently normal. Also with my GD -3 hour test, my fasting levels were normal but the 1 n 2 hour was off. I told my mom that challenge is not the low sugar but the high sugar. But she insisted i take a little sugar to control my low blood sugar. Told me how i argue a lot and should listen to advice. After talking for while, i gave in. Afterall o havr in the past felt dizzy twice and eating sth sweet helped. I Took a small glass of pure juice but the feeling didnt go. So now i know it aint the sugar. I dont know what is happening. And now i know i have sugar to worry about too on top of how am feeling.

I hate not knowing what to do and what is wrong with me. Please tell me it aint my blood pressure because i cant handle another thing going wrong.

Today i ran some errands, ate salad, sausage, nuts, milk, and vegetable soup. Took my toddler to the play ground for 2 hours so i had some exercise after lunch. We both napped after, me later than him so he woke me up before i could get enough rest. I have trouble sleeping since hitting 3rd trimester. I handed him over to my mom and tried to sleep but failed. Later woke up and had the dinner of vegetables. Is there sth i did wrong that could have led to this feeling? Not feeling right has sucked the joy out of my pregnancy.