What do you think and what should i do?

I had sex on aug 8 and a few weeks after that i started sleeping more than usual and i started lyin down alot every since then..we done had sexual intercourse plenty times before but i use to act crazy and pop u at his house but every since we did that on aug 8, i haven't been bothering him or nothing and a few weeks after he asked me was i pregnant. I started college in August and my roommate have a child and she told me i was pregnant and she told me she know. All i do is lay down in my bed at school and i take a nap almost everyday, only time i really get out the bed is when i take a bath, and get up in the morning for class and i urinate at least 10 times a day.. I want to know everything you think?