I am a 74 year old female.....relatively active. stress with a 93 year old mother...I am the sole caretaker . however she is in assisted living and a wheelchair. I have some pain in hip and knee joints. I am overweight by about 30 lbs. I do eat well , but do indulge in ice cream and cookies. I feel I am gaining weight , but the scales don t show that. now I am having hot flashes. I see my primary care doctor at least every 6 months. my blood work is very good. the thyroid is borderline normal.
As per your explanation I suggest having check on your calcium and via d.  And start taking this since you need it as per your age. As well for pain initially you can use hot pack and use some pain relieving ointment after use of hot pack for 10to 15minuts. This should help you. Also visit once physio therapist to have idea on what all exercise you can do to strengthen the muscles so that it won't pain you back by supporting your joint. If needed you can also take few sessions of physiotherapy for early relief. I am sure every thing will be fine with all this but still if you have issue do visit your or tho doctor to discus it in detail. Hope this must be useful for you. Take care