More than 500 backlinks increase in just 2 days

Just saw this enormous increase in backlinks more than 500 today. This got me worried or is this normal. I just changed themes on Saturday and did not built any backlinks at least not even 50 for the couple of weeks. And today I saw this massive increase in backlinks. I've checked through majestic and Pagerank and both showed the same increase.

I've only been promoting on Facebook this couple of days so can this be the cause of these backlinks.

There's no manual spam action in Google Search Console and only show my normal backlinks I am suppose to have.

I wouldn't worry about it too much unless your ranks start dropping. If it is a Neg SEO attack, nothing you can do about it but keep promoting your site as usual.

Just check on ahrefs where they come from. If your site is not ranked anywhere probably it's not "neg seo action"

Thanks guys I will keep an eye on my rankings hopefully it's nothing