So my friend has been having pain in her lower left for weeks now. She's done home pregnancy tests and all came out negative so after a few months she's obviously began to get worried and went for a check up at the doctors. Did he's bloods come back she's pregnant which she was happy about, 3 days later she went for a scan( today ) she's almost 9 months pregnant!! Whaaaaaatt.. she said she even used a clear blue! I'm confused how they showed up negative??