The first site you posted had no information at all except for anonymous internet testimonies, the women giving these testimonies, (if they are actually real), may have well miscarried for any number of reasons, and whether or not they received a flu vaccine. So not a credible source.
Natural News is in no way a credible source, but a sensationalist website that does not check the facts, or twists the facts of almost every article they write. So again, not a credible source.
Your google search did not provide any credible information, merely more websites posting opinion instead of actual information.
That's the trouble with getting your info from the internet, there is so little that is credible.
Thanks for trying though, I appreciate your efforts. I think I'll go speak to an immunologist I know, and make up my mind from the facts, rather than the hype and misinformation.