Miscarriage

I have been trying to concieve since my ectopic pregnancy in August 2013. I went on birth control pill Feburary 25th, 2014 and had a positive pregnancy test on the 5th of March so as told I stopped the birth control that day. The next day I started bleeding lightly and have seemed to have a second peroid with no pain involved. When taking a test on the 9th it 
 was still very faint but positive. I just stopped bleeding today as far as I can tell but i'm pretty sure I have miscarried again. Is it possible to miscarry without pain? How can I have a successful pregnancy?