sorry man, didnt see it. Dont do anything that bothers it is the simple answer, if its not hurting you during or after the exercise, that exercise is highly likely not an issue. Some back issues stem from axial loading, some are completely different, so doing overhead work is a highly individual thing as well as squatting. If you feel pain, dont do it. Until you get it diagnosed accurately it will be hard to advise you exactly which exercises are going to be safer for you and which ones arent. It could be anything from a tear in the tissue to a bulging disc to issues in the fascia, etc. etc., so get it looked at asap.
In the mean time, some things that will help you are lots of foam rolling the glute med/it band/hams/hip flexors, light stretching, and if you have access to a reverse hyper machine it can be a lifesaver. Pay close attention to the psoas, glute med, and the hamstrings, really work on improving rom in those areas.