Nicki Minaj revealed the news on Instagram. Photo / AP

Nicki Minaj is pregnant.

The 37-year-old rapper took to Instagram to show off her baby bump in a tiny bikini and she captioned the image "#preggers".

Minaj - who is married to Kenneth 'Zoo' Petty - first sparked speculation about her pregnancy in May after discussing her food cravings and feelings of "nausea".

Minaj listed the bizarre food combinations she had been cooking up, and said that whilst she had not been throwing up, she felt sick and had been going to the toilet more often than usual.

When one fan asked her if she had been cooking anything in recent weeks, she said: "Absolutely. Steak. Shrimp. Plus my famous cheeseburgers. So good. Been rlly having red meat cravings then salad cravings with extra jalapeños. Ordered Chkn nachos that didn't come w/jalapeños. Who does that? Wow."

Another fan then picked up on her comments and asked her: "Are you also throwing up in morning and having to go to the bathroom a lot?"

To which she replied: "Lmao. No throwing up. But nausea and peeing non stop. Omg what do u think this means guys???? Lmaooooooooooo."

Food cravings, nausea, and frequent bathroom breaks are all symptoms common in pregnant women.

But Minaj's hints didn't stop there, as when asked to "post a baby bump picture", she seemingly confirmed she is pregnant, as she told the fan they would have to wait "a couple of months" to see her growing belly.

She wrote: "Yea in a couple months. The world ain't ready yet"