Hi I'm concerned I could be pregnant, I had been having unprotected sex with my boyfriend for 4 mnths I had my last period in June on the 7th, 8th or 9th.We did have sex during a fertile time which was June 25th. I was suppose to be due for my period July 7th but nothing but my breast we're tender. On July 15th I used the restroom & wiped I had light pink bleeding & didn't get on the panty liner then reddish/orange & still nothing on the panty liner, then I had some red bleeding for only 4 days which my period is always on time & always 7 days. I sleep alot here lately I'm kindly moody, feel thirsty alot & sometimes my breast hurt plus my urine is darker than it use to be I continuously have the urge to pee, I have butterflish feelings in my lower abdomen/ around the uterine area sometimes feels like there is a space of air in the middle of my uterus ?. Could I be pregnant?