What am i supposed ti do now? im pretty sure i blew it with him.?

so this guy i really like..like i think im going crazy..asked me a week ago if i wanted to go sledding with him and then hang out afterwards in his treehouse. i've been the one to text him first every time..but its not like im doing it every second. he acts like he still wants to hang out with me so asked him if we could wednesday. he replied by saying "wednesday for what?" and i said "oh..umm..sledding. but you know, whatever. whenever." and he goes "hah i have plans then sorry." and i just said "okay." he never answered back. you would think he would at least say another day or something. now im sitting here going crazy because i think i blew it, and tthats the last thing that i wanted to happen. he drives me crazy. just thinking about him does. i dont want to say anything else cus i dont wanna seem pushy. help!