anyone had this happen?

Bobbi
My period was late and when it did come it was very lite and short. So yesterday morning I took a test, it was positive. Hubby, daughter and myself saw it. Then while at work I had just a little spotting. No big deal to me as I had little bleeding with 2 prior pregnancies and they turned out fine. Then, last night and this morning took more test both if which came out negative. Help!!