Nose piercing advice? PLEASE HELP

Keighley
I got my nose pierced 6 and a half weeks ago and from the start it hasn't been right. I got it peirced with a screw stud thing, yanno the one with the hook on the end. It was sore at first but normal. I have been bathing it in boiled salt water since it was peirced every morning and evening, last thing I do before I leave the house and last thing I do before I sleep. I have been careful with applying makeup around it too. 
THREE DAYS after I got it peirced I woke up with it hanging out, having snagged it in the night: 
Since then I don't think I've made it through a week without catching it and pulling it this far out. 
After a few weeks of this I started to develop a tiny lump next to the peircing, I already had my doubts that it was healing properly because it was pussy for the first 3/4 weeks (even though I was still cleaning it). I googled it and discovered that it might be a keloid scar and to add a Camomille teabag to the bathing solution. So I did, and was extra careful when applying makeup and the lump seemed to start to go. Until, one night 2 weeks ago I managed to wake myself up in the middle of the night by pulling THE ENTIRE THING out. Yep. And I had to put it back in. Since then the lump went and then started to develop again and I still haven't been able to make it through a week without catching it. 
Now this is what it looks like:
I stopped cleaning it and have just left it alone for the last few days, just to see what would happen, but the lump has continued to grow. This is the biggest it's ever been! I had a cold when I first got it pierced and I now have another cold, don't know if that has anything to do with it but if anyone has any advice please help!!
I now plan to go back to the piercing shop and ask them to put a smaller stud in, maybe that will stop me catching it? I'm also going to use surgical tape over it when applying makeup and go back to just using salt water to clean it rather than salty camomille. Thoughts?