Hi there Katie I have the same prob my cycles where every 28-30days till we started TTC now they go to 36days. The blood could have been spotting or implantation bleeding your not imagining it, this happen's to lots of women it may be you tested to early try waiting 3 days and test again.I've been suffering with nausea,tiredness very emotional and lots of other symptoms and my period isn't late yet I'm due in 2 days I'm really hoping to be pregnant, Good Luck and all the Best really hope I've helped try going on Still Trying 2 Continued thread under General theres lots more women TTC to chat to,have a moan if need be hope to see you there!!!