Should I test?

Taejah • I`m 31 years old and have been married for 4 years. My husband and I recently welcomed our first child, a beautiful baby boy in June.
My periods are crazy irregular, but we've been TTC. I've been tracking my cycles on Glow and another app, and Glow says im 2 days late, the other app 1 day. For the past 5 days my breasts have been so sore, it feels like I've sucked on a mouthful of pennies and I can barely keep my eyes open at work.