Ovulate after miscarriage

I had my very first miscarriage on around the 15 of this month. Some of the apps I’m using are saying I’m ovulating today and others were saying I ovulated a couple days ago. I guess my question is, is it even possible to do so right now? Are my periods going to be irregular now?? And has anyone had a miscarriage but got pregnant again right after? I’m cramping as we speak on my lower right side and been BD everyday after the bleeding stopped