The only way to know your pregnancy status it to take a test. I would encourage you to talk to your healthcare provider about your issues. Birth control pills and even the "mini pill" (progestin only pill) can provide you with regulated cycles, help stabilize your hormones, and lower your risk of uterine cancer. I'm sorry you are having cramping, but this could be caused by numerous things. You could use ibuprofen for the pain and try heating pads until you can get in to see your healthcare provider. I wish you all the best.