11 DPO with a bfn

An

Well I have been feeling EVERY symptom .. bloating, slight cramping, throat, headaches (which I never ever get), exhaustion, nausea, lots of discharge, etc and have been doing early detection tests almost every day and only striking nays. I just read somewhere that there is only 20% chance of a bfp with a First Response early detector after 11dpo. Anyone test positive after then? I am 4 days due to AF here and starting to think these are PMS signs afterall😢. This has been my first TTC cycle and I was hoping for one and done. Also, my donor doesn't have anymore ICI vials which I've heard better the chances of him reaching Miss Egg. We did an at home insemination and I pretty much ovulated during the process. If anyone out there has some knowledge come drop it please and thank you!