My dogs been acting weird lately and I'm not sure why, she has been whining and if there's a loud noise she leand forawd and whines, it just stared a couple hours ago, it seems like she has a limp but I'm not sure and I went to pet her and she yhelped, I'm not sure what to do

I know most everyone will say take her to the vet and I agree but first... check a few things out very carefully. Check each paw while she's standing by lifting gently and making sure she has no stickers or anything stuck between her toes. Also I have a little pomeranian that one time strained his leg playing to rough with the lab and I watched him for half a day to see if he got better or favored it more and watched for any more signs of pain like increased yhelping. He just laid down and was lazy for half the day, about mid day he was feeling better and started walking on it. If your dog has trouble letting anyone touch her or check her paws then don't wait till mid day take her to the vet first thing in the morning.

P.S. the crying may be because she moves reacting to the loud noise and it hurts when she reacts... but please don't wait longer than mid day if you don't see anything our dogs are precious and can't always tell us why they are hurt and it could be something worse. Good luck!