When is the best time to test?

June 5th I had my last period, I then had protected sex (I’m on the pill) everyday from the 17th - 22nd! I then had the lightest bleeding ever on the 28th and 29th and that was it. I’m now around a week late for my period!! I’ve done tests and most have been negative or difficult to read. I had a blood test which came back as HCG 1 so definitely not pregnant!

However!!! I’d had symptoms before my bloods of nausea and headaches. I had no breast pain until 2 days ago (1 day after my blood results) and let me just say, it’s agonising!!!! My nipples are so so tender and even sleeping on my side is painful! Any tips or advice as to whether it’s just PMS or I need to take another test?