Is this the start??

I am 38 weeks pregnant. Woke up this morning really not feeling myself in general. I also have cramps, back pain and a lot of pressure but was all constant and not coming in waves like contractions would. I have vomited 3 times since waking up and just generally feel like pants. I can't get comfy at all! I lost 2 good sized bits of my plug yesterday too. Could this be the start of things getting moving or just late pregnancy being a bitch? Baby is apparently super low and engaged too. Don't know if I can manage 2 more weeks of this if it's normal pregnancy symptoms. 😂😂🙄🙄