I've been having lower abdominal cramps does anyone have any ideas why?

So, i’ve been having lower abdominal cramps, but nothing like period cramps. They are kindof faint and soft, but still there. It’s on both sides and it’s just weird to me. I’m not taking birthcontrol have been off it since my last period which was the 10th of this month. I have no clue what it could be any ideas? I have been “active” but only once since my last period. I do have UTI infection at this moment, so it might be a cause of that. Any ideas? Please comment..