I just had an epiphany...I hope

My baby’s almost a year. A fabulous sleeper. 11 hours a night, no night feedings since 9 months. I found out I was pregnant last Friday (I would have been about 3 1/2 weeks along - not very far at all). My baby normally nurses before bed, and started having a hard time that weekend getting to sleep...she seemed hungry still and wanted to stay on the boob. It was exhausting (or so I thought!). Monday night (nearly 4 weeks along) she starts waking up once at night to feed (so weird!) and really struggling to go back to sleep, like she was hungry again. Then waking up twice a night. This feels different than other sleep regressions we’ve gone through. Could my milk supply be dropping already? I just realized that maybe it’s not just a sleep regression. Maybe she’s hungry...thoughts? Solutions? ANY advice would be appreciated please. I’m so tired!