36 day cycle- ovulation help!!!

Cortney • Army wife. Wrestling mom. Dog lover to a boxer.
Okay I am TTC for my second and having issues- I am new to testing for ovulation as of this month. 
Normally my cycle is about 36 days, and lasts about 7 days. 
In December it came a week early and only lasted 1 medium flow day and 2 spotting days. 
Right after AF ended I tested my ovulation kit for the first time - my line was super dark just about as dark as the control line- I am 3 days out of ovulation according to Glow but my lines are all most invisible especially compared to the lines directly after my AF.
I am constantly nauseous, very exhausted but get spurts of energy. I have been having back pain for the past two days and I'm looking for answers. 
I have done multiple HCG home tests which came out either evap line, negative, or invalid and today I did a blood test at the hospital but have not gotten my results. 
Just looking for anyone who has any advice. 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors