Should I test?

Af was suppose to come 1/29 or 1/30. My cycles are regularly 26 days. If not the most ill go is three days late. I'm now 4 or 5 days late and I'm not sure f I should get a hpt. Kinda scared it'll be a bfn. I also take medication called bromocriptine and it never interfered with my periods. I have been taking it for almost two years. I am sexually active too. So should I test?