Home test and roughly 14 weeks??

I know this seems kinda crazy that I would be testing this late but I've had my period and have not missed but I had sex Jan 9th and 10th. I've had a light period ever since but I've been on and off sick throughout these months and my mother in law suggested I test even though I've had my period becuase she said it looks like my body is changing and I act different. So I decided to take a test and I've took 6 becuase I'm just really confused at this point. They keep coming up really, really faint positives and a few negatives. I figured if I'm this far along then they would be a for sure postive or a for sure negative! I don't have an ob/gyn so they said it would be atleast 2 weeks until they can get me in. Has anyone had this experience?