Why am I always paranoid about pregnancy???

I take my pill within the hour every single day. Of course I’ve taken a pill late once or twice but I’ve NEVER missed a pill over the course of 2 years. My boyfriend never finishes inside me either, we always pull out for some slightly added protection.

Yet I still find myself paranoid about pregnancy every single month! I never get my period but this quite common since I am in Lo Loestrin Fe.

Is there a reason I should be this stressed about pregnancy? How do I make myself calm down and stop over analyzing everything as a pregnancy symptom?