Okay my monthly normally comes on 21 r the 22 of every month I miss it in November but on
NOVEMBER 28 I got 3 day light spotting I'm thinking its called a implantation bleeding cause the following next day after having unprotected sex I had a dark brown discharge then tonite I just had a white thick creamy discharge I feel bloated and have slight dizziness n back pain a couple of days ago could this mean I might be pregnant?

It isn't Nov 28 th yet! Please reread your post.

I meant to say October 21 I miss it and October 28 when I begin spotting

If you've had sex then pregnancy is possible.

The first symptom of pregnancy is normally a missed period. Until then, any symptom you feel is likely a something else, including wishful thinking, or fear.

Wait until your period is at least 2 weeks late, then try a home pregnancy test using first morning urine. If that test is negative wait for your next period, if you miss it, test again or see a doctor for a blood test.

Good luck. :)