For those who do ART...

I've been trying to beat what should be a minor bout of bursitis in my shoulder due to an un-swimming-related activity about 3 weeks ago. It was initially so stiff I had problems raising my arm to the side without pain. Now, after active rest and a little bit of swimming with fins, I can lift my arm fine but I have twinges when I move it certain ways. The funny thing is that it really bugged me a couple of days ago after I had sat at a swim meet the previous day without using it at all. I'm beginning to wonder if I should try ART but am afraid of all things chiropractor-related after a few lame experiences with different DC's. Is there such a thing as only needing one or two ART treatments or am I likely going to be given the hard-sell to be treated three times a week for the next three months? The only providers are 30+ minutes away in traffic and I'm not sure I want to drag 3 kids with me to a bunch of appointments. Any thoughts???