I am in a dilemma with this guy I like, HELP ME!?

I met this guy last semester at coollege, and we hit it off right away! We sat together in cl, and hanged out after school all the time! We started texting, and at first I was really nonchalant then I started to like him. I just got out of a two year relationship with my ex, and we agreed to be fwb WHICH WAS A HORRIBLE IDEA AND I THINK IT WAS JUST OUT OF VULNERABILITY. STUPID, YES I KNOW. We had once, then he blew me off for two weeks.We still texted everyday, but he still blew me off. So, I got together with him two weeks later, and we had - he went cold again, and then I only saw him the week after to help him with his band stuff. It was SO MUCH BETTER before these "arrangements" came about. I got to know his guy friends too, and it felt great liking a new guy getting to know his group of friend and all.. We were supposed to register for cles together and it never happened. WORSE THING, I THINK I MAY BE PREGNANT BECAUSE MY PERIOD IS OVER A WEEK LATE!! I got close to his guy friend, and he was so supportive, and much nicer then the guy I like. I told him about my pregnancy scare, and I didn't tell him that I did something with his best friend. He was so sweet, and told me that he is here for me.. So, I hanged out with the guy I liked yesterday, and we are starting school on Weds. So, I texted him today asking if he would like to hang out tmw after school - NEVER ANSWERED THE WHOLE DAY! I was so insulted, and upset. I just don't understand why he is hot, then cold. I am freaking out for my other "problem". I start school tomorrow, and I didn't tell him about this. Help me!?