Can't really speculate from those pictures. If you think they are you might want to separate them from the male though. Males have been known to eat the young at birth.
At first glance I would say no........but Have they been with a male recently? Did you see a lock up? If you have a small scale you can track their weight.
I kept them with a male when they are little ,about 40days ago I saw the male chase the female and try to mate with her,but I didn't exactly see the lock up,they indeed jumped at their food days before.and now both of them refuse to eat,but the belly still swelling,so I guess may be they gravid,anyway ,i'll wait a couple of days.