Almost 5 days late on my period and still negatives

Tomorrow will make me officially 5 days late for my period. I’m NEVER late, like ever! I always start the day before or on time. My husband and I are TTC and I’m like 16 DPO. Could there be a chance that I am pregnant and just testing too early? I am going to take another test in the next few days. Just needed others input since this is my first time at all this.