29 F  
5'5"  
145 lb

Started looking for some answers to explain symptoms Ive been having for a few months now.  
Been dealing with fatigue and weakness (especially with physical exertion), constipation, and frequent woozy head nausea.   
I've had both vitamin D and B12 deficiencies in the past year (corrected with supplements in previous months, but D seems like it's dropping again). 

My insulin has tested slightly high when my blood sugar tested low, which prompted a glucose test and showed some abnormal results. After the glucose drink, my blood sugar went up (within normal levels), but second draw my blood sugar dropped, and then came back up. 

A1C close to testing was within the reference range. 

Diagnosed with PTSD, generalized anxiety disorder, and high cholesterol.   
Taking sertraline and birth control pills and intermittently taking miralax.   
I have an active job and play an amateur sport.  
I don't drink alcohol or take recreational drugs.

Have tested for hormonal abnormalities to rule out PMOS (PCOS), this doesn't look like a diabetic response, and CT scan didn't reveal anything abnormal with my pancreas.   
EGD ruled out celiac, but discovered minor hiatal hernia.   
Tested negative for Lyme.  
Negative for alpha-gal (trying to rule things out).  
Hemoglobin in normal range.   
ANA positive.

I'm waiting to get in with both endocrinology and rheumatology and I'm just looking for any ideas on what I should consider looking into or asking questions about.   
Thanks everyone. 

Why would my glucose test look kinda like this?