You should try to take them regularly especially in your first trimester as the baby is developing right now… preferably with dinner as they tend to make you nauseous (at least they make me nauseous) if taken in the morning.
I’m taking “Nature made” prenatal vitamins… checked the bottle, no gelatin. Here’s where you can see a pic for reference.
I got them from Walgreens, they are available at Target and CVS also.