Advice/help welcome

I really don’t want to be getting my hopes up but I’ve been TTC for 3 years and had tests done and both I and SO are ok. I’ve never conceived, s we just put it down to timing. However, I’m now for days late, and I’ve had the some terrible headaches for 3 days every evening and today I’ve no appetite. I’ve got a test but I’m to anxious as I’m fed up seeing BFN most months. However, I’m rarely late (28DC) was due on 11th Dec and my glow dates for predicting my period always seem pretty spot on. I guess I’m just seeing if anyone has had anything similar and got their BFP!! Or got BFP stories to share. I will do the test in the next couple days, I’m just building courage to do it.