Advice needed...feeling desperate

Claudia • Mummy to William James 8th March 2015
I have not had AF for over a month. I am over a week late...:I am never late...
​I have gained weight despite eating healthy, for the past two weeks I have had symptoms like cystitis but no UTI but constantly needing a wee and then starting yesterday I have had a brownish discharge...does this mean pregnancy?
​I did a home kit but it was a BFN...going the doctor tomorrow
​Please give me your thoughts!