maybe it's a stupid question .... IDK

So this month I had my period at my normal time 01/11 but only lasted until 01/12 (later that night it ended, stopped as if it never happened.) on 01/14 my husband and I were having sex and I was bleed a little bit not too much. Before I even got my period I would like to mention that I did take a pregnancy test and it came back negative . 
So my question here is ...? 
Could I still be pregnant or has anyone else been in this situation and still gotten a BFP
Should I take a pregnancy test now? I mean it's been almost 2 weeks since my period. 
HELP. 

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