Yes you count day 1 as the first day of bleeding. I have had 3 miscarriages and my cycle has gone straight back to normal each time, although I can't say if that is normal or not. That is, I have had my period 28 days after the miscarriage. You might need a few ovulation strips as I know many women can have 5 or 6 weeks before they get they next period. If you check for EWCM I find that can help give you an idea as to when to start using your ov strips.
Good luck!