I had sex on Jan. 31st. I am not on the pill and we did not use a condom but he did pull out. Now 6 days later I am having light pink/light brown spotting which I never have. My next period is due Feb. 14th. Jan 31st was during my fertile days and according to the tracker I use I was supposed to ovulate on Feb 1st. Is the spotting a sign of implantation... so could I be pregnant? I also have some very light cramps. How soon can I take a pregnancy test?? I really need some good advice, as I am really hoping that I am not pregnant...

You could be pregnant. Any time you have sex, even with protection, pregnancy is possible.

Wait until your period is due. If you miss it, try testing 2 weeks after your missed period. Make sure to use first morning urine. If that test is negative, wait until your next period. If you miss it, then test again, or go to your doctor for a blood test.