Advice please!

My period is 8 days late and All HPT have been negative. Is there still a chance that I may be pregnant? Anyone else go this long and still get that BFP? How long should I wait before asking for a blood test? I’m getting anxious and my DH keeps saying he’s worried I’m getting my hopes up, but I can tell he’s getting his up too. He’d just never say it out loud because he doesn’t want me to worry about him.

I should add that I am having symptoms but they could be pms or I’m just being crazy and convincing myself I’m having symptoms. Nauseous, tired, back pain, pelvic pain/cramping, headaches, and a crazy amount of indigestion.