Spotting again

Hi ladies. 6 weeks pregnant today, first pregnancy. I have been spotting for the last couple of weeks, which i thought was normal. However today, i had cramps which have stopped over a week ago, and even then, it wasnt as intense as today. Spotting today went from dark brown, to a bit reddish and on my day pad. Before it was only when i was wipping after a wee. Called Early pregnancy unit, they told me i should wait till my first appointment on Thursday, unless i have heavy bleeding & intense cramps - then i should head to A&E. My question is : is this normal? Should i be worried?