Ford F150 is not coming out of drive but shifter moves freely

I just bought a 2004 F150 Lariat and drove perfec r
ly fine shooting good and no lights on passed
smog no problem. Then today I went to put it in
park and realized it was already in park and that I
just drove like that. So I gave it some gas and sure
enough it drove in park. So then I tried to go into
reverse and nothing still went forward when I gave
it gas. Tried park same thing still went forward
when I gave it gas. Turned it off to see if it would
just reset and now it won't start figured its in drive
still but I was able to push it which I thought it
would only do that in neutral and the shifter will go
all the way up and down but its not catching
anything it feels like. I don't know anything about
vehicles really besides basic oil change and things
basic like that so any help on what to do or what
this is would be great.