I just want other ladies opinions...

According to my app tracker, my AF should have come on 5/27-it didn't. I was having period symptoms too earlier that week (sore boobs, cramping) I tested in the evening of the 28th. It was negative. My husband and I had sex on the 31st (sex usually spurs on my AF) it still didn't come. Beginning of this week, my boobs started hurting again but I haven't had cramps. AF still hasn't come and it's 7 days late. Was planning on testing this weekend. Just don't wanna be let down...is there a chance I could be preggers? Even with a false test? Thank you