I had 4 days of brown spotting mid cycle. i am constantly tired lately and feel nauseous a couple times per day. could i be pregnant?

We never: Say u can't be pregnant. Check a pregnancy test , no birth control and unprotected intercourse causes pregnancy. If that's not occurring it could be several things, start with some ranitidine to decrease stomach acid, are u sleeping well? Check the upt, if enough hormone 2 make u sick, should be enough to make it positive, good luck.