Any advice

Hey ladies so I track my periods every month I have a few apps one says 10 late one says 7 days late did Abit of searching online and one said I was due on today but nothing as of yet I don't even feel like my period is coming I'm normally cramping and moody but nothing. Just waking up with lite headaches bones are Abit achy and lower back ache in the morning I haven't tested yet cause feel like I'm not but cause I use the pull out method during sex can you get pregnant that way so confused is any one in the same boat plus if Iam correct think I've only had sex once or twice last month but definitely pulled out ?! X