Bleeding twice in one month

Wendy
Hello, 
Anyone else experience this? 
I had a tubal reversal on dec 3, 2014. We started ttc on dec 12. I missed my period in dec. normally I get it around the 25th of each month. Three weeks later I started having light brown discharge that turned into heavy huge tissue clotting bleeding. The dr said maybe it was my period late due to the surgery. Then yesterday I started bleeding again. I am worried and confused.