My last period was 10-12-10. I had a copper iud it was removed 11-09-10. I had unprotected sex for the first time after the removal on 11-11-10. I have took 2 home tests they are negative. but I am feeling a little sick and tired I have 2 kids already so I kind of know what to look for. So what should I do? I am just not sure because I have almost always had irregular periods. Also my back has been hurting and some pain in my lower left side around the front

You can wait and see what happens when you think a period is most likely due, try a home pregnancy test now, or see your doctor for a test in office. Odds are you are not pregnant just yet, but it is possible. It could be your period is getting ready to start or you could be fighting an illness.