What if it changes course like a hurricaine?
Hurricanes are steered by the trade winds and the Jet stream. There's no such current out in space. It would be just as likely for the earth to change course randomly.
Only severe sun spots can cause that to happen; they tangle the magnetic lines. That what the solar observatories are for.
Last spring they were so bad that they knotted up to the point of turning one of the TV satellites inside out, and and it started beaming what everybody's TV was seeing back to the studio! They had to launch a replacement.
John Edwards channeled Sir Isaac Newton for me, and he guarantees that you have nothing to worry about.