No Period on Pill Break

Patient: I’m on the combination birth control pill, and I’ve been on it for nearly 3 1/2 years. My question is this month I didn’t have a period on the 7 day break. I ALWAYS have a period (normal, pretty heavy) on the 7 day break, and it has never been lighter or missed in the 3 1/2 years. I try to take my pill at the same time every night, (usually around 10) but sometimes is 11pm or even midnight. I’ve taken it at 1:30am before, but I never miss it entirely. Is there a chance I’m pregnant? Should I take a test?

Symptoms: No period