Is it true?

So my boyfriend and I had sex but we used a condom. I'm now 22 days late and I took a pregnancy test 3 times each showing a weird line about 2 hours after. My breasts don't feel swollen or tender and I don't feel all that sick or dizzy except for the fact that I've been really gassy lately but maybe it's because I switched from eating meat to a vegetarian? I'm not too sure. Also my uterus really hurts but lately I've been eating this orange candy that has about 1000mg of vitamin C and read that it might be the cause of the pain? I also have been really tired and stressed out but I've always been one of those people that can sleep anywhere anytime and its finals week so I get about 3-4 hours of sleep a night. If it helps about 2 weeks ago I was sick for about 2 weeks too. So I'm not sure what the chances are of me being pregnant. Any advice/ theories besides telling me to take a test or going to the doctors ?
That's the 3rd test I took.