What to do when my boyfriend totally ignored me today?

we just started going out for like 3 days but we went out before i never get to see him since we go to differnt school today i saw him i walked up to him to talk to him nd he said like 3 words and walked away when he saw his friends i felt so stupid just standing there i then told my friend to come so i wouldnt be alone after he finished talking to his friends i asked him where he was going (i was at school at the time) he told me nd i asked if he could take me with him but all he said was you have to go to school and i said so? and he said no just go to school nd i walked away and said ughh! whatever! if yu dnt wanna take meh! i mean i didnt want to seem clingy but he made no ATEMPT to notice me not even a hug or a hi..he hasnt txted me and after what happened i dont want to text him what shud i do about this (sorry its so long)