If it was a malicious spam email and you clicked a link on it, you might have gained something unwanted. If running Windows, do a security scan with whatever security you currently use, then grab a few free anti malware programs from majorgeeks (spywareblaster, malwarebytes etc) and scan with them - then give adwcleaner a go for any deep seated rubbish. They will probably all turn up odd bits n pieces which might or might not have anything to do with your link, but the machine should end up nice and clean.
I've been receiving some odd ones that purport to come from a distant in-law, but they are noticeably "wrong" because although the e-name is correct, the end of the address indicates that it is an Australian address, and she is not that distant.