My girlfriend took ipill twice in her last cycle. Once on 19th and once on 30th March, she was expecting her period on 3rd April and she got it on time. After that we had sex on 13th but as I had pulled out, she said she didn't want to have the pill again so she didn't. She slept all day on 15th, had a bad stomach ache on 16th, back pain for like 20 mins at 17th evening, but overall, she's been sleeping a lot more that usual. Today, at 20th she slept for almost tthe whole day. Could it be the symptoms of the ipills taken in the last cycle or is she pregnant ?