Do I have a problem??

Earlier i.e. before my marriage one year back, my periods were normal...

My cycle ws 21 days and used to last for complete 4 days... i used to have a medium flow and sometimes back pain with it...

Now, since one year, i am having periods with irregular days, ranging from 21 days to 25 days... and my flow is scanty, lasts for only 2 and half days...

i underwent a medical abortion in the initial month of my marriage, could this be a problem for my irregular days and less blood flow??