So on the 15th of November I started the depo provera shot. When we got home we had sex, unprotected for the first time & he finished inside me. well everytime we have had sex after that it's been unprotected & he's finished inside me. I ovulated on Nov. 26th & AF isn't due until Dec. 11th. Today I noticed some pinkish brownish stuff on toilet paper only when I wiped. I have felt nauseous over certain things but haven't actually vomitted. Could I be pregnant even if the depo was given?