If i re-tore my acl i would at least limp right?

so i had my acl repair about 6 months ago (it was a hamstring graft) i finished physical therapy in 4 months and have been play basketball for about a month now full speed. yesterday i was going up for a lay up and felt like a quick pain behind my leg somewhere. Not sure where exactly, either behind my knee or a little above. well i landed fine and continued to play a few more games because it barely hurt, even played volleyball later that day. Well now i have some pain behind my knee when i try to jump or run fast, but it also goes up into my hamstring too. I really think its my hamstring (hopefully), but will probably go to the doctor in a few days if it doesnt get better. I mean i would know if i re-tore my acl right?