I'm twenty years old and have been taking birth control pills since I was thirteen? I think? So, at least seven years. My periods have always been heavy, sometimes seeming too heavy, which I thought was strange because I always heard when you're on birth control, your periods become lighter or could stop completely. My last two periods were really light. My first light period didn't concern me too much because I thought maybe it was stress but then my period I just had, was a lot lighter. It was so light I only wore a tampon to bed and if I went out in public but even when I had a tampon in, there was barely any blood or none at all. I'm not consistent with my pills and I never take them at the same time so I'm more concerned now because I'm wondering if it's possible I could be pregnant even on the pill. I've also been experiencing period-like cramps even though I rarely ever have cramps before, after, or during my period and I've felt super bloated lately. Even after I have a bowel movement I still feel bloated, usually even more bloated than before. This morning I work up feeling really nauseous and light headed. My body also really hurts and I feel so tired and really weak. Should I be concerned?