I had a benign breast tumor removed, is it possible for the tumor to have returned?

I am a 26 year old female and In December 2015, I had a lump removed from my breast. It was benign breast tumor but it was removed as it was quite large. I noticed the lump was there as I was getting a pain where it was, especially when I had my period. Over the last 6 months or so the pain has returned in my breast and it is a little worse than what it was before. I’m not sure if I can feel a lump as it feels different with the scar and has always been a bit tender since the surgery. Is it possible that the lump has returned and do I need to go and see my GP?

Medications: None