We have unprotected sex on 25/01/24 and took ipill on 26 01 24 no side effect after taking but after 4 days of taking of ipill on 30/01/24 she got heavy bleeding and after that she start nausea, vomiting, headache, lower abdomen pain and back cramps, and stop bleeding on 04/2/24 but she still got nausea, vomiting, headache and lower abdomen and cramps, and we took pregnancy test on 06/02/24 the test came out negative, but she got pregnant symptoms i'm confused can you please help me.