Brown Spotting, Fatigue, Nausea, Light Cramping, Frequent Urination. Am I Pregnant?

Hi, I was wondering if you could help me and give me advise on something. I ve been having some pregnancy symptoms these past couple of weeks ( fatigue , nausea , dizziness/light headed, light cramping, going to the toilet frequently). I ve also been breaking out more than normal. I read that it could be caused from pregnancy but it could also be just my normal skin.. The last time I had intercourse was around 5/6 weeks ago but I also already had my period 4 weeks ago. And I noticed some brown spotting yesterday which i ve never experienced before. I m a little concerned about this because i m not expecting my next period until in 2 weeks time. I need some help, i m really lost at the moment.