Help please

Angelica • Married❤️have a boy 💙 my daughter is my angel 👼👼 TTC baby #3

So my blood work came back as a negative as a pregnancy right now.... I’m very healthy I eat 3 meals a day yesterday I was cramping on and off but no period still I don’t know what to do I’m never stressed out neither and I’m pretty healthy 😭😭😭