Hi,
Depending upon the OPG and keeping in mind your TMJ condition, It is highly advisable to go for one extraction at a time. Ping for multiple extraction can cause increased tension on your TMJ leading to further problems. Extraction of impacted teeth generally dont relate with TMJ problems other than if u are having problems of jaw displacement( which can only be diagnosed clinically)
Next Steps
Take a gap of minimum 15-20 days before going for another extraction as it will allow for proper healing to occur in the treated area as well as less discomfort for you overall.