Not everyone will experience painful or breast tenderness and sometimes symptoms come and go. I knew just a couple of days after conception that I was pregnant. I had extreme fatigue, could barely get out of bed, I had dizziness which happens when your hormones skyrocket and the blood rushes to your head, and was running low grade temps. Breast tenderness came a little later but have since subsided. I also go on my intuition, I very carefully planned this pregnancy and even when the first couple of tests came up negative I just waited a few more days and would take another. Some women just "know" and I knew 3 days after my fiance' and I had sexual activity that I was pregnant. Just hadn't had it confirmed yet. :)
Had these same symptoms when I had my daughter and I got them right away to. Just watch for what they call "flu like symptms". However, keep in mind that sometimes when a women really wants to believe she's pregnant, even if she's not, the body can create all these symptoms and you will feel like your pregnant even though you are not.
I been having pregnancy symptoms for the last 3weeks my period I'd 5 days late and I started to bleed could I be pregnant or is it my mind.