My mare has cycled 3 times in the past month and I went for a trail ride with her and a gelding the other day and she

My mare has finally gone out of heat after getting a shot last Friday to
stop it. As of yesterday she was still squirting and kicking out.
Now, this all started on Friday the 11th when she went into heat on the way
back from a trail ride. She went crazy in the trailer bucking and kicking for a
half hour straight all the way home, even after getting sedated.
I had the vet out this past Friday and he did an ultrasound and her
follicles were large. He said that she should have a Caslick's procedure that
she is sucking air.
Well, the heat symptoms stopped yesterday but she is still kicking out. Now
I am not sure if she has irritation in the uterus or somewhere in there and is
still in pain or she is still sucking wind to cause this. I don't know if the
Caslick's is going to work on the kicking out. I would suppose that if the wind
sucking is causing the irritation then it should work to stop any future
irratation. I am just concerned that the kicking out is another issue and that
she may have a procedure that is not really nessesary or won't work.
Should I have blood drawn to see if there is something else going on? Could
it possibly be a neurological disorder? The kicking out is dangerous and she
could injure herself more or hurt whoever is around her.
Thank You