I have to agree with Mada, it sounds more like you have something going on with your urinary tract or something, unless you already know you are pregnant. I would hope that you would consult a physician as soon as possible because they may be able to prescribe some antibiotic or pain reliever for you to help. But if you think you are pregnant, please tell them to do a pregnancy test before you get prescribed any medication, as they may choose a different course of treatment that would be "baby safe".
If you are pregnant, hopefully you will come back and let us know. We would be glad to help you along your pregnancy with information on what signs and symptoms of preeclampsia to be aware of so hopefully you don't run into any severe problems.