Young couple ttc

Fredrika • I gave birth to my son, Benicio on September 29th 2017 and recently just gave birth to my daughter, Kalani on November 15th 2018.
My bf and I have been Ttc for 7 months now originally I was supposed to start my period on the 27th - 29th I started early on the 24th- 26th. I've had light spotting before and now after my period. My periods never start early and I've never spotted before. When is a good time to take a test?