ovulation tests! help

andrea • TTC #2
I have been TTC for one month now. I have been monitoring my ovulation. I have been testing everyday and I have been getting a positive test everyday for 5 days now?! 
​I had been on birth control previously for 5 years and came off of it in December. since I stopped taking the birth control I have not had a real period. last month there was light pink spotting on the toilet paper after going to the bathroom. someone told me that I might be underweight but my BMI is normal. I weigh 119 and and 5'5' and not sure what that would have to do with having positive ovulation tests. someone help?