Am I exercising too much?

Now that it's summer I have a lot of time on my hands... I don't really have extra curricular activities so I'm stuck home pretty much all day unless I go out (there's really not much to do in my town).... Anyways I'll usually wake up about 11 am and ride my bike from about 12-2.... I rest for a while and do p90x from about 5-6... then I finish off with jump roping about an hour from 8-9... I'm just wondering... I'm not light headed or anything or puking, but my muscles are tensed up like I'm on roids or something. Is this alright?