gap between floorboards and skirting

Hi there's a gap between the floor and the skirting/ wall in my room that's about half way across and it does feel uneven to me. Ive had lots of floorboards screwed in recently and also noticed a screw that was just screwed in between a floorboard straight into a joist recently, I've moved it and tried to pull it out it's along the same joist that has the gap between the wall /boards too and feel like this may have caused an issue as the whole room doesn't feel as it did before even noticing the landing starting to move more since this happened. Shall I post a few photos or anyone advise me as to what might have happened or can anyone take a look? Im in Dagenham

 

It won't let me upload some photos it's saying files to large for some reason think ones upload

 

Hi mate no only recently took it out boxing day, should've been done already thad why there's carpet stuck to the skirting boards where it was painted not long ago. Id like to upload a couple more photos but will do that tomorrow , the gaps about 2cm, I also took out a fair few screws on floorboards over the room ended up putting them back in but one scree got threaded and someone tried to remove it with a special bit from screwfix attached to a hammer drill with no luck , he put quite alot of weight on that area but Its been driving me mad since. Also need to upload a photo of where the screw I was talking about is.

 

I've noticed it for a while , I used to sit along where that is and since none of the floorboards were screwed down that hi especially the floorboard used to bounce where it's uneven when I got it screwed in you could notice it was raised under the carpet. Problem I've got at the moment is in the room next to mine aswell there's a couple cracks on our living room ceiling but nothing major but in that room the floorboards bounce quite Abit, doesn't feel it gt worse since I yanked the screw out of the joist the other day which is why I'm concerned it's also noticable on the landing too.

 

Sorry couple mistakes there, since I pulled the screw that was directly in the joist (not in any floorboards) I think it's gotten worse noticing more floorboards on the landing moving too.

 

My room feels uneven, it's not visibly uneven it's just feeling very uneven ,. Alot of the floor boards used to dip when stepped on anyway but now it just feels horrible lol.

 

Just drops slightly in certain places, it's not just the screw when someone tried to remove a threaded screw with hammer drill and special screw extractor bit with no luck they put alot of weight on the drill when they was doing it. In an area right in the middle of the room. Since then I've noticed it dropping slightly in places.

 

I haven't mate but it seems to be moving when stepping on the boards rather than it being completely uneven on the surface. Got worse on the last couple days since pulling out that one screw lol .

 

Removed a couple screws earlier aswell and now feels like it' more uneven now don't even know how it's possible lol if anyone would whatsapp me I can send a video of what I mean lol

 

File won't send on here says file too large .