Cursor drifting to right

My MacBook is about 4 or 5 years old and the trackpad was replaced a month or so ago after the cursor started to act on it's own. Now, the cursor automatically drifts to the right, bottom corner of my screen. I'm unable to successfully click on anything due to it drifting so fast to the right. I've rebooted multiple times to no avail. Probably taking it in to the apple store tomorrow. Any suggestions?