Giving up hope

So I'm now five days late for my period. Tomorrow will be day 6. We did the bd when I was ovulating. I've got sore boobs, feeling tired, put off my coffee despite always drinking it, metallic taste in my mouth, feeling really sick, cramping stomach. No sign at all of af but getting negative pregnancy tests daily now. Have to drop a urine sample in at the doctors but don't see much point as it will clearly come back negative aswell! Giving up hope of being pregnant now with still getting a bfn being 5 days late for my period. Feel gutted