E.R.
Hi, i am now pregnant with my second child, and had the same experience you describe. I took 7 pregnancy tests, the doctor told me to forget about it, I'm not pregnant. But instinctively i knew, plus a couple dreams, as well as physical symptoms. Finally, i got a positive result at about 6-7 weeks. So my advice is to just wait it out; if you start feeling symptomatic, continue to test at home once a week or so. Oh, and just in case you are, start taking folic acid now. Good luck!