9 DPO, too early for first response?

My husband and I are TTC (haven’t been trying long!) however many years ago when we were young and dating we terminated a pregnancy by choice. This week I have had such familiar symptoms (heavy and sore breasts mostly, unlike anything I’ve felt besides first pregnancy) and it just FEELS exactly like it did all those years ago. I’m 9 DPO and period is in 5 days, today I took an early results First response and it showed negative. Is it possible it was too early to test? I’m terribly impatient and want this so badly that I’m afraid I’m convincing myself I’m having pregnancy symptoms. Ugh! Any thoughts?

Sorry if this sounds ramble-y, my first post on here!