Should I test??????

Jessica
Want to know, if I should test. My last cycle was 9/2 n I was fertile 9/9-12.  Me and my other half had sex 3 of those 4 days. But, we used the pull out method.  About, a week later or so I bleed lite for 2 days.  I used liners. Could that have been implantation bleeding. I have been feeling a little weird n my cycle hasn't came on. Could I be pregnant?????