Possibly pregnant ?

Logans mommy💙👨‍👩‍👦👶🏻 • Mommy to two angels ❤️ my little nugget 10-18-16👼🏻Lilly Jane 4-12-17👼🏻❤️ My rainbow little boy is due March 2020🌈👶🏻

I am still breastfeeding my 18 month old son but my period returned at 10 months pp and I am now 5 days late with all the same symptoms I had with my son so I tested this morning and it was negative any other mommas had this happen and ended up pregnant?