Is it too early to test?

On the 7th of June I had unprotected sex with my bf, my period is usually here by the 23rd of every month, somewhere around there. It's the 30th and my period hasn't come yet. This would be my 4th pregnancy with 1 living daughter who is 2 1/2 years old.. I'm trying to test and not get a negative when it may be a positive. On Monday of this week I bought one of those $1 hpt and it was negative so I think maybe it was just too early. Lookin for some friendly advice to ease my mind...