“I have the dermal birth control implant and I have had it for one year. I recently had sex and he pulled out. I took four tests: 1st was negative, 2nd was negative til five hours later, 3rd and 4th were negative. Could I be pregnant? Do I need to take another test in a few days?”
The birth control implant provides protection from pregnancy for 3 years. Since you have had your implant for a year, you should be protected from pregnancy. It sounds like the second pregnancy test was a false-positive. You did not give information on your relationship, so remember, the implant does not protect against a sexually transmitted infection so latex condoms should be used if you are ever unsure about your partner.
Hope this helps.