pose ucheck neg other tests (help)

[babygirl0712]

OK so i was on implanon since November of 2012 and i started getting really sick on it went to kaiser and they told me to take another test in week and that they think I'm going through early pregnancy not getting sick off the implant. I just took a u check test like 2 days ago and got an instant positive. i went with that result because having a 1 yr old it did feel like im having really bad morning sickness. got my implant out and Planed parenthood spent like 2 hours telling me there's absolutely no possible way you can get pregnant on it made me take like 3 tests there and those were neg so i took an equate last night and that was neg and one this morning and it looks like an almost nonexistent pos. so which test do i go with this is really confusing.
With my oldest the u-check test worked great but now im just confused and worried