When to call the experts in? -PLEASE RESPOND

Vicki
Couldnt believe i got a bfn at 13dpo
​My chart is the most amazing to has ever been!
​We have been trying for 5 months-now going on 6
​ 
​I lnow this isnt long or hits the 1yr mark ive read so much about but what else could we do???
​Ive been  
​Charting,tracking, temping, and bd every other day the week leading up to O and even for two days after O 
 I have clear thermal shifts so I know I ovulate and i use cm checks to confirm too.
​But i started to spot today ..its still minimal but its getting more pink instead of brown  as thr day goes on w little to no cramping
​so whats the deal???
my cycle range from 31-37 days and i ovulate any where from cd 19-23, so im sure we would catch it on time between all of the charting/temping 
​ 
​how r we missing it!?
​ i just dont understand.
​Should we go speak to my dr and  see what our options are?
​Its just becoming stressful and not fun and we are starting to think something is wrong (more than just having cysts)
​What do u think?