Trying to Concieve-- 6 months post-removal of Nexplanon Implant

Jessica
I gave birth to our first daughter September 11, 2013. I had Nexplanon Implant inserted Oct. 14, 2013.
No complications with the implant. Upon decision to begin trying again, I had it removed March 2016.
I've taken ovulation tests every month and I have been getting peak fertility results. I mark my calendar and my cycle is to a T perfect.
But we have not had any success with a second pregnancy. 
I'm beyond distraught at this point. Has anyone else had similar problems? Any suggestions?
Should we begin seeing a fertility specialist?