Has anyone has symptoms before a BFP?

Sorry if this is in the wrong category... The DH and I are still a few months from TTC, but......

Last night I mentioned off-hand that I have had heartburn at night for the last two days (and that never happens)...He paused and said "Are you pregnant? You had heartburn at night with Ev."

It didn't even occur to me until that moment, but now that I'm thinking about it; I've been ravenously hungry (unusual), heartburn (unusual), moody (I plead the 5th).

I took a FRER this morning and it was negative, but based on my last period I'm probably only 5 or 6 DPO.

I also had light pink spotting this morning (also very unusual mid cycle for me)

Am I going crazy here???