Ovulation tests... First timer, first month.

Hi, ttc in my first month off my pill. Have used ovulation tests every day after my period to exactly pin point my ovulation period. I have been (dark line positive) for 2 1/2 days. Seems like I ovulate on 17th day... Or am I pregnant if the positive tests keep coming? This last week I have been getting a lot of gas, very thirsty, cramps/light ache like the beginning of a period but my period isn't due until 8 days time. I want to be pregnant but not sure if I am over analyzing symptoms.... Haven't taken pregnancy test