If a witch did cast a spell upon you, then I would say that you need to confront her. Nine times out of ten, you would probably know her in order for
her to have any "reason" to do this to you. Witches don't just go casting spells and pranks on random people usually? Are you delving into
something that we are not aware of? Have you met someone new? These are all the things you need to look at first to get to the bottom of this.
Do you think you've had a spell of some sort cast upon you? Or were you just wondering incase it ever happens?
Depending on the type of spell, you may have to counter it with another spell, in that case I would do some research; books, internet, anything you
can find about this. If you told me more, I could probably answer you better....
Sincerely,
Magestica