Sooky 7 month old

Hi everyone, first time mum here. I have a very sooky, clingy 7 month old. He pretty much sooks all day unless I pick him up. Is this normal behaviour ? He is already starting to throw tantrums if I don't let him have something for example if he grabs the tv remote and I take it off him he will scream and kick. I am exhausted as I constantly have to distract him and hold him, my back is so sore, he weighs a tonne and I am afraid to take him anywhere as he will cause a scene. I suffer from anxiety as well which doesn't help 😔. He used to be fine and really happy but all of a sudden he just got this major attitude where it's his way or the highway.