The pigment of your skin changes with hormones and it is likely you'll notice freckles more often. If you are actually growing moles (not freckles or skin tags) I would talk to your doctor
I had barely any freckles or anything before pregnancy and they have been popping up in lines of three everywhere my midwife said it's normal and unfortunately they won't go after baby is born x
Your skin does change a lot during pregnancy. I have a small handful of freckles and not many moles. But with my first all of a sudden I had a million skin tags. i had so many at one point I went to my primary to have the larger ones removed because it was out of control around my bra strap line. With this pregnancy I've noticed my skin tone change (skin around my breast is darker, and along my arms). they said that's normal and can even happen to my face. But luckily it hasn't. I've heard of skin tone change and tags appearing. Maybe more freckles. but never moles. I'd definitely bring it up at your next appointment. But it could just be how your body handles the change. Who knows... pregnancy is strange every round...
Thanx ill bring it up with my doctor next time i see him