2 day period?

Brittney • I`m 32 years old and have a almost 2 year old son (bday 9/3) and pregnant with our little girl (due 10/4)
This period was so weird! Spotted one day, no bleeding the next, bled full on the next day and then it just stopped. I took another HPT but it was negative. I did not use FMU yet...how long do your periods usually last? Mine is usually 4 days with at least 2 heavy days. Should I test again or just wait and see?