Freaking out

Ive never felt so happy then gutted in all my life got BFP on saturday & could not have been happier after having a MC in May and it approaching my angel babys EDD. only to have brown then pink spotting on and off today going between colours, its not enough that its went on my underwear its only when i wipe but i just have such a horrible feeling :-( I have a scan on the 16th but I have never been so scared of history repeating itself in all my life :-( x