Vomiting and diarrhea!

Hi all,

I am 38+1 pregnant with baby #2, today I woke up with back pain that goes around pelvis and down my thighs, I thought it’s gas but no it wasn’t going away! So I thought “oh, maybe bathroom time!”, i went to the bathroom and i had few severe cases of really watery diarrhea (sorry tmi), also i was throwing up (also fluids only, sorry tmi) non stop! I had this for few hours accompanied with what felt like period cramps and back pain that comes and goes, then i was able to lay down and try to relax and drink fluids, i was able to sleep for like 2 hours but i was waking up due to back pain and hubby checking on me.

I haven’t eaten anything suspicious last few days, all food were home cooked! I still have few cramps that comes and goes but nothing too serious.

My question is: could this be a pre labor sign? Or it’s just a stomach flu?

I remember having 1 day of severe diarrhea with my first daughter and i was in labor the next day (which also i had delivered her on and was at 38+2 weeks 😂)

Any opinions?