Need help

Had sex on April 30th, missed my period this month and been having all the pregnancy symptoms so I took a pregnancy test and it came out negative but it was wayyy to early. The symptoms stopped for a couple days then started again, like  fatigue, sore breasts, missed period, back ache, acne and a lot more. Don't know if I should take another one or not?!!??! Or should I just go in the clinic and do a test?!??! Also it was unprotected sex and not on birth control