Search results not staying on topic?

I’m not sure if anyone else has this problem but for some reason every time I go on Pinterest and click on an image (for example shoes) instead of showing me similar search results of more shoes it keeps showing me results of something I pinned before that (I was looking at lingerie before looking at shoes and now all it shows me is lingerie even when I’m completely on another topic) it’s really frustrating! I even started looking at recipes and every other pin was lingerie and it’s driving me crazy now