Feeling like I'm getting my period... 34+4

Sheska • 27-year-old Puerto Rican living in Miami, working in advertising and having her first child with her husband!
Does anyone else feel like they're getting their period soon?
By that, I mean dull back ache, headache, stomach going rock and roll, etc?
I'm a FTM so I have no idea what's going on hahaha. Just want to know if it's normal.