What Are The Early Signs And Symptoms Of Pregnancy?

hi i had my i.u.d removed in may 010 the following month june i began my cycle june 30th. july it came the 31st however august my cycle didn't come i was expecting it to come on the 31st again. so i took a pregnacy test at planned parenthood july 31st cause i had been having the i feel like i have to throw up feeling and eating alot. the test was negative so i said i'll take another one in two weeks if my cycle still not here. today is september 4 i having light cramps for now and it appears my cycle is here cause when i wipped my self after using the restroom i seen a light pink/red color. so i'm wondering is it normal that my period skiped august or can i be pregnant?