Is this a blackhead on my chest?

Hi All,

I have been using bio oil on my boobs and tummy to prevent stretch marks- I had to limit use on my boobs as noticed that was getting a few spots. Now today I look down and saw this black dot... is t a blackhead just like that? Or could it be a piece of material that got wedged? I'm so confused as I have never even seen a blackhead on my face! What does it look like to you please ladies and any tips to get rid of it safely while pregnant?

Thank you!