Late period + negative result ~ any similar experiences?

Anyone has similar experiences? I tested around 3–4 days after my missed period using a digital kit, and it came back negative. Now it’s been about 6 days, and still no period. Does a negative result at that point usually mean it’s final? I’ve bought another test (the line-strip type) and was thinking it might more sensitive than the digital one, but I haven’t had the courage to try yet… a bit worried about another disappointment. Extra information: a few weeks ago, I used a Clearblue ovulation kit but didn’t catch any surge, though we still baby dance for a few days around that time.