pregnancy

I am having an appointment in 3 hours at a clinic to do a pregnancy test. I have been anxious and nervous, i was on Depo and took last shot in Nov. i had very wacky periods, so I knew conceiving wasnt going to happen, depo had me with irregular bleeding and all. I have been takin women vitamins to detox because I was so tired of Bleeding! Anywho May 27th was my last bleeding. I usually have sore breast and I dont. My period last 3 months were (24, 25, and 26 days) cycle days. Before my son 4 years ago i was 30 days. Now im on cycle day 31 ! And nooo sign of AF. My last pregnancy. I have only been pregnant one time in my life. If i am now i guess makes it twice lol but my son i didnt experience any symptoms and tested day of period. Today i should of gotten a period. I am so lost and i took a test cd 26 and cd 27 and they were either faint or evap. Idk