Missed Menstrual Cycle

I’m 4 Days Late From My Cycle, But I’ve Taken Two Pregnancy Test Which Were Negative 😭 All The Early Symptoms Are There Emotional, Frequent Restroom Stops, Tired, Hungry, Unless I’m Really Just Over Thinking It 🥴 But I’ve Been Trying To Conceive Since November 2018 Baby #3 & For Some Reason It Just Wasn’t Working Out To The Point I Even Went To Get My Fertility Checked Out Which Turned Out I’m Great Inside 😙 Never Say Never But I’ve Never Been Late On My Cycle So Far That The One Time I Have Was My First Two Pregnancy. Could I Just Be Testing To Early? Or What’s Going On? Any Suggestions Before I Get My Hopes To Far Up 😩