40 weeks period-like cramps at night?!

So my due date is tomorrow and for the first time I had period like cramps last night that woke me up in the middle of the night ! It happened twice and I had to get out of bed and walk around (and it still didn’t help.) well, eventually I went back to sleep and it happened again once this morning.... but they’re clearly so far apart. Could this be the start of labor?? I also had so much discharge this morning. Anyone else experience something similar??