Ovulation

I have been doing some research and have found multiple articles that say it is possible to ovulate without having a period...

Is this true?

If so has anyone gotten pregnant without having a period?

I have a very irregular cycle. And I always believed that i couldn't get pregnant bc of this. But lately I've been thinking I am.

Idk maybe I'm just crazy bc i want to have kids. But lately I've been extremely tired, vomiting, my back has been hurting, and I'm either extremely hungry or not hungry at all.

Any advice is welcome