Did I just have implantation??

Hi lovelies! I've been on here a while 🙊 Don't post very regularly though. So my husband and I have been ttc for about 5 years combined (we have a daughter conceived with IVF). Anyway, my period is due today, but yesterday I had cramping, (and TMI following) and at one stage when I went to the toilet, I had fresh blood when I wiped (not much, it was pinkish and not a lot), and have had nothing since. I have many things crossed that I have finally managed it naturally (pretty please be it!!) what do you guys think? I *think* my smell is worse and my nipples are slightly darker (sometimes I think my mind plays tricks on me with these symptoms though!). Let me know your thoughts!!