Anyone else?

I will be 32 weeks tomorrow by the grace of God and I have been feeling so yucky! Not sinuses, no cold, no fever, no vomiting but just not well. I drink water all day and I do not over eat and I eat at home mostly. This has been going on for 3 days now. I did have diarrhea 5 times a day ago but my stomach does not hurt or cramp whatsoever. Only my lower back. Would this mean I'm getting close? I never had this experience with my other pregnancies and this has only started occurring since I entered my 3rd trimester.