Could I Possibly Be Pregnant? I've Been Spotting Almost Two

Could i possibly be pregnant? I've been spotting almost two weeks. Color- pink to brownish red My last cycle was Feb 8 2016, and I start spotting on and off since March 12 2016. It only gets worse if I'm walking alot or standing for a long time. No cramps. I have also been nauseous and vomiting since I noticed my period was late. Im usually 28-30 day cycle. Sooo im lost..