11 days late, bfn???

Hey guys! My fiancé and I have been trying to conceive for a few months now. You could say I have a semi-irregular cycle. It's always 5 days length but the cycle goes anywhere from 32-40 days. Anyways. My last period was Jan 23,2017 and according to my app (and it's usually spot on) I was supposed to start Feb 28,2017. I am currently 11 days late. I've taken several tests but they all say negative. I don't have insurance so I can't go to the dr unless I know for sure. I've had several pg symptoms like bloating(constantly wearing sweatpants now), swollen breasts(none of my bras fit anymore) a little bit of nausea, weird cravings like peanut butter and pickle sandwich(weird right?!) clear discharge. The other day I went to wipe and it had a tinge of yellow discharge. It doesn't burn or itch when I pee and I've had infections before so I don't believe I have one, insomnia at night but tired during the day and most important a missed period by 11 days. But if I keep getting bfn what does that mean? Could it still be too early to test? I did a pregnancy calculator online and it said I should be 6 weeks now. If anyone has any idea what could be happening I would appreciate any advice! Thank you ladies ☺️ oh and sorry for the long post!!