Well I had unprotected sex on August 29 4 days after my period ended. So during the 2 weeks after sex I been feeling lightheaded, sore breast, bloated and peeing a lot. So on Sunday 14 I started having some mild cramping on and off thinking that my period is coming next week as scheduled. Then on Tuesday 16 I had some lite pink when I wiped thinking this is too early for my period to come and that it never 6 days early. So on the 17th (19 days after sex ) I decided to take a early 5 day pregnancy test which came back negative. So still the 17th and still having lite pink in my discharge ( 2 days with light pink discharge with mild cramping). I still have 5 days before my period is suppose to come. so could i be pregnant or is it something else. And the only symptom I have now is mild cramping very sore nipple to the touch. My boobs don't hurt just the nipple part.
That my question.

It's too early to tell. Wait until your period is two weeks late, then test with the first urine of the morning.

False negative is common with the early testing

When you are about 2 week late for your period, do another pregnancy test, using first urine of the morning, when you wake up

As was said by the others... too early to even test if you want a real answer from it.

As far as what you are experienceing... its almost certainly due to something else.

Yes, you could be pregnant. Many women will feel as though their period is about to start in early pregnancy and, for some, implantation spotting can happen shortly before a period is usually due.

Since periods can sometimes be off a bit, at times showing up earlier or later than normal, wait and see what happens when you would normally expect yours.