16 dpo 3 days late for AF

So I’ve tested 7 days in a row leading up to my missed period & all negative, not even a faint line. Today is supposed to be day 3 of my period but so far nothing. My SO & I are TTC for baby #3. With my first 2 pregnancies I got pregnant in the first cycle. With my first pregnancy I got a faint positive from 6dpo & it only got darker from there. With my second pregnancy we only had sex once & on the peak day of my ovulation, but I didn’t think that I would be pregnant so I forgot about it until I noticed I had missed my period by 2 days. I tested & got a very faint positive. This time around I’m feeling so discouraged because I tested from 7dpo until the day before my missed period & have gotten nothing but negatives. I just bought 3 more pregnancy tests & will be testing tonight & tomorrow & the next day. I hope that I’ll see something tonight or if not tonight tomorrow morning with fmu. Fingers crossed 🤞🏽🤞🏽 I wanna be able to give hope to the women in my same position who have missed their period & are at 16dpo & have gotten negatives previous to 16dpo. I’ll keep you guys update with what my test shows later!