missed period

an

so my boyfriend and i had sex a couple times last month. he was using a condom and i checked afterward if it had holes by filling it up with water, their was none. i havent gotten my period in a week. i took a pregnancy test. it said negative, but i went to read the directions a second time and it says i should’ve peed on it for 5 seconds. i peed on it for like three and idk if thats like not accurate since i did that. but ive been feeling really weird. my stomach feels huge and i lowkey dont know what to do. i just need advice.