ok so im pregnant with twins (18weeks) have been admitted to the hospital once due to bleeding at 14weeks, woke up saturday to a brown discharge on lots of pain at the very bottom of my stomach. went to hospital monday for tests to check for infection due to the discharge turning to a funny greeny colour. im still experiencing the pain wich comes every so often and lasts for a couple of minutes there very painful and disturbing my sleep. doc says its probably due to my womb growing. as anybody else experianced these pains and is it normal for them to be so painful?