How does a hysteroscopy change your cycle!

I has a hysteroscopy on my CD5, last day of period on October 9th. I was put on vaginal rest for 5-7 days. Hubby and I Bd 5 days afterward and pretty much every other day after that.  I did not really track when I ovulated. I started spotting yesterday and again today. Can this be implantation bleeding or my period?  Oh I am nervous, we have had three previous miscarriages. My sister just came over to tell me she is 7 weeks along yesterday. I would love it if we were prego together!