Despite throwing down in a big fight at a nail salon just the other day...with her boyfriend Rich Dollaz standing by watching...new pics surfaced of Erica Mena from a party last night that seem to confirm she's pregnant.

Check 'em inside, plus what Rich exclusively tells TheYBF.com...

"Love & Hip Hop" star Erica Mena rolled to D.C. last night where she hosted a party at Bar 7.  And she snapped a few pics in a tight glittery green dress that showed off a suspicious bump.  And she tweeted a few things that seemed to confirm her pregnancy.

Above, entertainment reporter Ashley Brittney posted a pic holding Erica's protruding tummy saying, "Auntie Ash."  Hmmmm..

Erica's friends snapped a pic with her belly with E in the club saying "No caption needed."

Erica already has a son from Terror Squad's Raul.  And it looks like she has another on the way.  She tweeted this morning:

I'm Laughing so much! I Love this right now. I'm happy

But is she just playing around by making it seem like she's got a baby bump?  That would be cray, but we have to wonder.  Because her own boyfriend was unaware of her possible pregnancy status. We asked Rich to confirm if she's pregnant and if he's the father.  He oddly said he knows nothing and is completely in the dark about whether she's with child.  Rich exclusively tells TheYBF.com:

"I don't know about all the pregnancy rumors.  Erica was posting pics on IG from Bar 7 in DC and I'm in Houston.  So I guess a convo is def in order when we are back in NY."

Rich said he just saw all the IG pics and was pretty shocked.  He also confirmed the status of their relationship telling us, "We're together on and off.  Mostly OFF these days."

Well this just confirmed a new storyline for LAHH.....

Pics: Instagram