I really need some advice!!!! Don't know what to think

Okay so I just went through my menstrual cycle Monday and only lasted a day and half. I'm having horrible back pains, a bad headache, and hip pains. I was having very unusual stomach pains Tuesday or Wednesday I believe. It hurt bad on and off during the day. My cycle usually last about 3-5 days but this is the shortest ever.. I'm concerned and need help on this. I've been trying for half a year now and nothing has popped up but negative results on the test and scared to take it tomorrow morning to be negative again....😢😢 I just want to be pregnant and though, what I'm thinking, chances could be or couldn't be. Need some advice please.. this would be my first pregnancy if I am pregnant. Tell me anything you know to help relieve some stress and curiosity off my chest!!!!