Oh this is NOT cool and I hope TMZ has the information wrong! Nicki was at an upscale hotel yesterday in Dallas, TX while in town for the Femme Fatale tour, when she apparently got in a fight with a man (unnamed). It escalated when he punched her in the lower lip and authorities were then called. Again I hope this was misinformation but if it IS true…I really hope it’s not her close friend/hypeman SB. Yikes! Details of the incident after the jump.

Marisa Mendez

TMZ has learned … Minaj was hanging out at the pool at the fancy Palomar Hotel when she got into a very intense verbal spat with an unidentified man she was staying with.

Nicki told a hotel employee to call police … while the man went to their hotel room. Nicki followed soon after.

When cops and paramedics arrived, Nicki told authorities their poolside fight continued inside of their room … and the man hit her in her lower lip.

The man had already left the scene when cops arrived … but Nicki insisted she did NOT want to press charges. Nicki also claimed she was NOT in a relationship with the alleged attacker.

Cops tell us an incident report was taken … but no charges will be filed per Nicki’s request.

Calls to Nicki’s rep have not been returned.