Nervous

Sooo....I'm 6 days late!!! I believe I've been  5 days late before though.  I haven't taken a test nor do I have any pregnant symptoms.  I do have some pressure feeling symptoms kinda like a crap coming about but not and then it goes away.  I don't know what to do.  Taking the test I know will put either a smile on my face or a frown so I'm kinda leaning on waiting it out and see if it comes.  I've had a miscarriage before so I'm very nervous for that.  I totally believe in the big man upstairs and fear that I won't be able to get pregnant because of my doings as a teen/young adolescents...Any advice??!! Words of wisdom?