Signs labor is near?

Currently 38 weeks with my 3rd baby. I’ve never had labor before so this is new to me (always had a scheduled C-section). yesterday my discharge amped up a lot but no bloodyshow or mucas plug. I feel like I have a fever but when I take my temp it’s normal. I threw up yesterday. I just feel like I got hit by a truck and exhausted. Could labor be near? I have irregular contractions on and off then they will just stop.