first time mom .

I woke up at 2 something feeling horrible naseous, sat up drank some water and felt like I had to run to the bathroom and all the sudden poop instantly so I sat on the toilet and got a trash can and nothing at all came out . Came & sat down and the cramps were worst cramps than I've ever got mixed with the other stuff it was bad. It eased up now about an hour and a half later . I know I was having contractions , I was also really cold and shakey but clammy. I timed 3 and they were 8 mins apart from the start to one to the start to the next but I talked myself out of it because I decided they weren't painfull enough to time yet.I am 36 weeks at my apptment Monday I was 80% effaced and 1cm dilated and lost some more of my plug today  . Should I count on it being soon when I have to go in or not? How long y'all think? A few really important people are going out of town next week and i really really want them there .