I think that I am pregnant!!

so I have posted on here before but I really don't know how to kind of give an update with the same post. but I have been checking my cervix and it's been high and puffed up and closed and I have very little creamy cervical mucus. my cycle days can go up to 42 days and yesterday was the 42nd day and no. Just yet my ovulation apps tell me that I was supposed to have my period from the 21st to the 24th but it never came so I just waited it out until the 42nd day of my cycle but obviously my period hasn't came yet so I have been feeling cramping gassy bloating and yesterday I felt nauseous and had diarrhea. the last time that I tested was last Tuesday and I got a negative and I really do want to test I'm just so scared to get a negative but what do you ladies think should I get a clear positive by now? I'm just so scared that maybe my period is out of whack and is going to creep up on me because I have cramping but I did hear that cramping is a little bit normal for early pregnancy signs