Contractions Q?

So I’ve been having Braxton Hicks for weeks now. Belly will get super tight, baby balls up and then it’ll lighten up. I get them multiple times a day (nothing consistent). But I definitely know when they’re happening.

Now I’m experiencing period like cramping lower. It’s not my normal belly “tightening” BH but just like I’m on my period. They aren’t like stop/go, it’s just constant cramping like I’m about to start.

What is the difference? Is there a difference? I’m 35W5D for reference. I was induced with my 1st two kids so never been in spontaneous labor.