Possible pregnancy...

Well I'm 4-5 days late. 
Having mild cramps but only when I lie down at night to go to bed. 
Also mild back aches around the same time. 
I woke up this morning out of my sleep around 4 am and felt so sick. 
Have had diarrhea today and just am not feeling it. Maybe I'm just getting sick? 
Anyone experience any of this? I did not with my first pregnancy. Other than the diarrhea. 
Thanks