Positive pregnancy sign?

I have never had this before and we have tried to concieve in the past. We had on the day i ovulated (used a opk) and i have had twinges since then. They have been getting stronger since 1 dpo. I am now 5 dpo and i have mild on and off cramps, bloating and gas, some minor head aches as well. Not like AF cramps, lighter and way to early.... could this mean there is a good chance iam preggers. I sure feel it...