IM 20 yea old and I feel really embarrassed about this but I just took out my iud on the 16 of Oct. And I started my pd on the 17 well my husband and I had sex right after I got off of my pd and I've been feeling so tired nauseated hungry emotional and I am 4 days late on my pd but I token 2 E.p.t home pregnancy test but both neg on one of the test was a dark neg line then a light line that looks positive what does that mean I'm worried about this because I work at a mhmr facility and don't want to hurt myself!!!help please??