TRX Support Squat
1st Trimester: Movements still look generally the same. If unfamiliar with strength training, use this time to familiarize yourself with the squat progression and the barbell.
2nd & 3rd Trimester: Continue to focus on full range of motion during the squat. If belly is impeding the path of the barbell, widen stance or transition to a box squat. If doing box squats, focus on full range of motion in air squats at least one other day during the week.
Babywearing Option for Squats: Baby can be worn on the front or back and squats can be done normally (if back carry, use dumbbells instead of a barbell on the back, but avoid front squats at this moment).
Take account for the additional load (aka your baby) in overall weight.
If barbell is not available, dumbbells are a great substitute and provide just as good of a workout!