About to give up 😭😞

I'm 19dpo took hpt 4 days ago bfn. Took one tonight bfn. I'm losing hope. We've been ttc 3yrs now. I'm so tired of seeing the bfn and I get so depressed. My last af was Jan 18th and I have a 32 day cycle. I don't know why in so late. I have ALOT,of symptoms like fatigue....I feel like I can't sleep enough. Frequent urination. Nausea without vommiting, the nausea get bad sometimes. but the bfn's are taking it's toll on me. I'm ready to throw in the towel.