I am a sixteen year old girl and I've been on Loestrin 24 for the...

I am a sixteen year old girl and I've been on Loestrin 24 for the past three months. I've really noticed that I am always hungry and go pee around 8-10 times a day. My boyfriend's mom, a teen mom, was very concerned I am pregnant. Because I not only gained two cup sizes but started getting taller and I probably have gained 5lbs. since I started and it definitely gave me acne, which I never used to get. I have HORRIBLE lower back pains but usually goes away after a quick massage but still. All of these symptoms seriously made me worried about being pregnant, even though I used a condom every time. I am worried still though cause I went directly into my second and third months of pills without having my period. Overall, it helps with what it's supposed to do, but can easily make you believe you're pregnant. Beware! (: