I think I may be pregnant :)

I got my period in the early month of October and I had sex on both of my fertile days and I got my period again at the end of October 28 days later and it didn't seem to be a normal period to me,heavy at first and slowed down I think and was shorter.. Past few days I've been having a lot of white discharge and I'm 4 days late for my period but I don't wanna test yet I wanna see if I will start instead of getting my hopes down :( I've been having migraines,nasuea and I've been extremely tired.. I've been having some small cramps but still no period! We were using the pull out method at the time!