I just want to know

I am now 4 days late and have taken 3 tests and all have been negative. I have been extremely bloated for the past like 2 weeks, having headaches, exhausted and my boobs have been tingling a lot! I just feel like I am. But idk if that's just because I want to be pregnant. I am getting frustrated because I simply just want to know whether I am or not. And my friends are coming into town next week and I don't want to drink unless I know for sure I am not pregnant. Uuugh! Frustrated.