On clomid & HCG, just had a V. light & short AF, need help!

[dontcarehow]

Hi all, I'm hoping someone can help. I'm on clomid, had good sized follicles on day 14 scan and was also given the HCG injection. Day 21 blood was 54 so I did ovulate. I had a bleed on CD 25 which was definitely bright red and before 10am (which is what the guidance says counts as AF). But then nothing for the rest of the day, then a small amount of the same stuff the next morning but nothing since (its now day 3). My AF has been both heavy and light on clomid, but this seems too light. I took clomid on day 2 of the bleed because I thought I was definitely on, but I'm now worried that either its an implantation (please please please!!) or that it's just spotting and therefore I've taken the clomid too early. I can't test because I had the HCG injection and it'll probably still be hanging around in my system. Don't really know what to do!