Late period but BFN??

We lost our first baby on the 18th of October 2019, at 6wks 4days almost 3 months ago now. And have been TTC our rainbow baby for the last 2 months. Last cycle was normal. Got my period on the expected day.

But this cycle has been different, I had small amounts of light pink spotting on 20th & 21st. Witch I was hoping was implantation, my period is now 7 days late & I have been experiencing on & off nausea, along with frequent urination. I took a test on Wednesday afternoon & got a BFN.

I feel like my brain is just playing tricks on me this time & it’s breaking my heart cause I keep hoping that it’ll happen. 🙁

Any advice on what to do ladies?