Hi Cassie
Sorry to hear about your shoulder problem. I had a shoulder thing a couple of years ago - which took about 18 months to completely resolve!!! I think it started because I fell down the stairs running down to get a phone-call and fell on it wrongly. I couldn't do up my bra or take T-shirts off by crossing my arms, and couldn't do stuff in Pilates when lying on one side. I went to doc and they referred me for physio - who diagnosed it with some weird name like subachromial impingement. Gave me some exercises to do - one of which was impossible (but like trying to move parts of your jaw) so I went back once and then didn't bother and it just got better on its own. I was surprised that movement was still restricted for so long and only improved very gradually - but maybe to do with my age (mid 60's). However I am back to normal now
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I would say to anyone else who has started to get joint or movement problems - lose weight if you need to, take lots of exercise and including Pilates (and gardening!) which keeps everything supple and moving, and if near menopause do think about HRT if you are able to (Cassie I know this doesn't apply to you!)!
When I was in mid 50's I started to get weird pains in my hips and knees during exercise (I wasn't doing much but had two teenage boys at home which kept me busy) - and this was when I started taking more exercise - and I thought I was far too young to get this sort of pain, so took myself in hand, lost weight, started HRT and took regular exercise and can honestly say it was the best thing I did as I get very few joint aches now (some wobbly ankles in morning a bit but OK once up and about).
Sounds like yanking the lead might cause something to pull even without realising - and hope it resolves for you Cassie - but might take a while!
Hurdity x