I missed my depo-provera shot back in april. i have had inter course since then. i have been nauseated for about four days now. could i possibly be pregnant?

Yes, check HPT: You are late for your birth control, had unprotected intercourse, and are not sure if pregnancy is possible? Check home pregnancy test to determine. Consider condoms for protection from unplanned parenthood + stis. Good luck!

Possibly: If you had unprotected sex, without benefit of chemical birth control, yes you might be pregnant, or not. Start with a urine test, see md if positive and/or if symptoms continue.