I would get some ovulation tests and do one everyday for 2-3 months and see if you are ovulating 💗
Normally you will ovulate 2 weeks before you start your period. So yes it’s possible to get pregnant without a period. But most likely only if you were getting ready to start your period again. It’s not as likely you are ovulating every month and never getting a period
You can, but likely that you might not be ovulating but not 100% Things like bf and co sleeping can tell your body not to ovulate