Maybe Pregnant?

So my mom took away my phone for a while and so I didn't get to log a few periods. I estimated when they were and my period is either late or due in 2 days (I have 2 different period apps with different average days). I don't have any money to buy a pregnancy test, I don't have the freedom to go to a store alone and buy one, and I don't want to worry my boyfriend if I'm not bc he's leaving for a job soon. Also I don't want to tell my parents bc my relationship with them is already fragile and this would shatter it beyond repair