Help me ! Am I pregnant?!

Natasha • Kaydence leigh evans
i had my nexplanon implant removed march 13th i still have not had a period my doctor said i could get pregnant immediately .. i feel I'm pregnant and my boyfriend also thinks I'm pregnant due to the change in my vaginal discharge during sex. he says that my discharge is now thick instead of watery. when i was pregnant with my son i knew i was pregnant but all the test i took where negative for almost a month after my missed period. i am extremely tired i have headaches when i wake up. my sex drive is fluctuating and i have missed my period for april. i have taken pregnancy test but all have come back negative i called my doctor but she won't do a blood test til i miss ANOTHER period. but like i said i tested negative for almost a month after my missed period with my son. could i be pregnant ? should i just keep testing? please only positive and helpful answers thanks.