Spotting at DPO2

Angela • 💍 Married 10-11-12! 👫TTC since 11/2013. 💉 IVF #1: 6/2016, miscarried 7/2016. 💉 IVF #2: 8/2017, miscarried 10/2017. 🌈 FET #1: 4/2018, Rowan Amelia born 12/16/18
Never spotted before, I'm pretty regular. Anyone had this happen? Thoughts? Thanks!