Hi, I have had my iud for two years and never had a problem, I had unprotected sex and now about 3-4 weeks later in hot, headaches, spotted mostly brown during my period time (which is usually heavy), I m nauseas all the time, having bloating, and low back pain. I have a Three year old and in feeling the same pregnancy symptoms I had while pregnant with him. I have also had a tumor removed last year in march off my ovary. Can I be pregnant?