Good Morning Ritaann
Welcome to these boards! They are so amazing...and such a help...
I am new to dentures, too...I had my extractions on Jan.4 and got immediates top and bottom...With the tops there usually aren't too many problems at all...mine only started getting loose about 3-4 weeks ago. The only adjustment I've had to the top is just a little on the back of one side. When they started getting a little loose it was starting to make me have a slight gag reflex. After trimming just a tiny tiny bit off they were fine again. Now, the bottoms - that's a whole nother story!!!
If you are only 3 weeks into this new adventure - YOU ARE DOING FANTASTIC!! Just hang in there and give it a little more time...you will adjust to them. At first, I felt like I was wearing a sports mouthpiece!! It felt sooo huge in my mouth...but then one day it didn't seem to bother me as much..and now, I don't even think about it anymore...So it DOES get better..
Please let me know how things go, okay! You'll be in my thoughts

....
Lots and lots of hugs,
Jackie