Light brown/tan discharge 1st trimester?

Im 5w5d today and had very light brown or sort of a tan coloured discharge tmi, didn't have intercourse nor a pap recently .. 
Is this normal? Its not heavy and i can barely see it on my pantyliner but its worrying me so much had to ask !
Plus had an hcg test 2 days ago and my levels were amazingly high.. Need some reassurance please!