9dpo BFN -- feeling discouraged!

I feel like every month it's just such a huge let down! I have no known problems, a textbook 28-day cycle, ovulate on day 14...what is going on?!?!? We will be starting cycle #9 on Monday and I'm just getting so discouraged! I feel like we've tried so much. opk's, preseed, legs up after, pillow under the hips, missionary only, switching it up, sex everyday, not having sex everyday, soft cups after, mucinex, O after sex, baby aspirin...I'm just getting so bummed out. Please just let me know if anyone else feels the same!! 😭😭😭