Help!!

Hi ladies! I had a baby 4 months ago have been using condoms ever since! Other forms of BC do not suit my body I used to bleed after sex like a massacre had happened! So that’s when we decided to have our first little one! I’ve had periods since either early or right on cue! I’m 3 days late! Tested yesterday with a boots own brand stick and came back negative! Today I still haven’t come on! Should I test again with a more expensive one? Could I be pregnant? We haven’t noticed any tears or holes! OH always squeezes them after to check! HELP!