Feels Like AF is Coming but Ended Up With a BFP ✨

At 11 dpo, I tested negative with the Walmart cheapie test. Haven’t tested since. AF was due yesterday (13 dpo) but never showed up so, I’m assuming it might show up today (14 dpo). Has anyone felt like AF was coming but ended up getting a BFP? Just trying to remain positive yet realistic about it since I tested negative at 11 dpo and might be out. It’s been a year of ttc and have an appointment with a fertility doctor next week. Was hoping to get a positive before then.