Question: Could i be pregnant

Im so confused with my body......had period on the 30 march 2016, sex pullout method on the 12 april 2016 and protected sex on the 14 april 2016.....was bleedind very little that night n stopped, started spotting on the 17 april 2016 for 3 days, was faint n dizzy, nauseous, tired , bloated and nw spotting again 11 may 2016....could i be pregnant?