pregnancy test

So I've had most of the symptomes of being pregnant, the food cravings, some foods make me gag and my sense of smell is better, the headaches and slight back ache, sometimes cramps, my boobs are sore but the other day they got sore for awhile and after I slept went away mostly, I get really light headed and dizzy, but the last pregnancy test I took was negative. I don't know when I could have gotten pregnant, so should I take one again today since I took one like 5 days ago, or wait till my period around the 29th?