For about 4 months now when I do heavy squats or deadlifts I have been getting tailbone discomfort. It typically is not very painful just a little annoying, and happens as I stand up on the squat or the deadlift. It is right above my butt crack on the left hand side. I have been told I have hip tilt when I do my squats. I just am not sure the best way to stretch this I do hip mobility very often and as I said this is not a pain that prevents me from doing much but it can get a little painful and when I max out it normally hurts for about a week.

I guess my question is, could This because of the hip tilt and do I need to just continue to work on hip flexibility. I have done a lot of research and looked at articles but it just said to ice and take Tylenol and I would really just like to know what causes this.

Thanks!!!