Me and my girlfriend had sex on December 14th, 2018. I felt something that I had cummed but I pulled out in time but I did not see any semen leaking from my penis. Also nothing was dripping from my girlfriend's vagina. There was a towel underneath us because it is her first day of her period of that month. Her cycle is typically 30-32 days. Being afraid, we decided that she take a minipill for 1 week. She took minipills on December 15, all the way to december 22. She had withdrawal bleeding after 2 days stopping at the pill for 1 week. On January 4, 2019, she was brought to the hospital diagnosed with UTI. She also suffers from constipation and bloating. Today, at January 14, 2019 was supposed to be her period. I am afraid that she misses that. Is she pregnant? Does urinalysis detect possible pregnancy?