I don’t know what contractions are!

I’ve been having an achy feeling radiating from the bottom to the top of my uterus and/or back on and off all day. Honestly the pain is very similar to gas pains (bear in mind I’ve never had menstrual cramps, so telling me that’s what it feels like won’t help 😂) The pain is pretty achy....I’m definitely not crippled over in pain. I’ve been having BH for a couple weeks...but those have just been tightening, no pain at all. Are there tightening BH, painful BH, and then real contractions?! Or am I just having super mild real contractions?

I’m due in two days. ☺️ Help a FTM out!