Tmi. Cm.. period.. advice?

Hi I'm very confused and need some guidance.

The 27th and 28th I had a weird amount of cm like i almost felt like a I was peeing sometimes but it wasnt pee🤦‍♀️ it went away and then the 30th and 1st I felt like I hadn't ate in days I was starving alllll the time. That feeling has passed now but now I've been on and off VERY light cramping all day today I'm due for period in 9days. Is it just period coming.. this is all new never happened type of "symptoms" also on the 28th I was 150lbs I weighed in on the 2nd at 160lbs. I'm now at 155lbs. I dont get it I'm so lost here. Should I be worried...

What's happening? ...