 [ Symptoms ] can my headaches which are always in the same location & can be very painful be caused by a pinched sciatic nerve [ Disease ] hi such symptoms do occur when you tend to take contraceptive medicines such medicines are made up of hormones and their intake causes sever hormonal changes in our body that causes mood swings and other symptoms i suggest you should get another pregnancy test now if you have been sexually active if the abdominal complaints are more u can get a usg scan of abdomen done thanks