Is tenderness when you push on lower abdomen a sign of pregnancy?

Hi, I'm new here and trying to find some answers. I went off the bc pill on the 13th, and ovulated immediatly could tell by my discharge and had sex, then about 6 days later I had brown and pink discharge for not even a whole day. There was very little. Then it has stopped completley. What's weird is I just had the same discharge of ovulating on the 23rd and also had sex at this time. I took a preg test but neg. I have been very tired and hungrey and when I push on my lower abdomen right above my public bone it's pretty tender. The day I went off the pill I had my annual exam and pap is normal and so was everything else when they did the internal exam and I had no tenderness. Oh it's a bit hard too. I still have not bleeded at all except that very tiny bit over a week ago. sorry so long but felt I needed to give as much details as I could. I'm worried about the tenderness and if it is normal?