ovulation strips after a miscarriage

Amanda
I started trying to track my ovulation at the beginning of this week. I most def tested high yesterday and today but tested positive the days prior. 
How accurate are the ovulation tests after a miscarriage? 
I completed my miscarriage in February 7th. Dr told us we could try again as soon as we were ready. Tuesday my HCG level was 5 and we started trying on Tuesday...
Any advice would be greatly appreciated!