I need eyes..

so all last night I've been feeling sick, like pregnant sick for the past 3-4 weeks. AF arrives in 4 days. My boyfriend told me to take a pregnancy test in the morning (today). so as I woke up this morning I felt cramping and Sharpe pain under my ribs, so I do my morning pee and peed on the little stick, I waited a few mins and I swear I thought I'd seen 2 lines. But I'm couldn't tell so I wake up my boyfriend to see if he can see anything he tells me no. we've been trying to conceive for the last month. But I don't know why I can't seem to get a positive test. I've done 6 test and all came back negative.. But hopefully today when I go to the hospital I'll find out. cause it's been almost 3 years since I had a baby. I kinda feel like giving up trying to conceive, but we really want our second baby! I just need better eyes then me to see if they can see a negative or a positive..