Help?!

So I m/c early jan at 8 weeks went for scan told there was still some sac left, I chose to pass this naturally went back 10 days later and told it had absorbed in my womb as I hadn't passed anything! I got my period 4 weeks later had it for a week stopped for 4 days or so and got it again for another 3 days ! Don't know when to expect next period in order to test !!! Help