Hi! what type of mobilizations were done on you?
Because the sidelying manipulation in which there is a forward thrust on the pelvis and a backward thrust on the shoulder is more harmful than beneficial

The following is an extract from an article:

'Unfortunately, the traditional approach to mobilization of the Wikipedia reference-linksacroiliac joint has been an attempt to correct a high iliac crest by extending the innominate on the sacrum. This is usually done with the patient side-lying and with the operator behind the patient pulling backward on the shoulder and thrusting the innominate forward and downward on the sacrum. This is done in the mistaken belief that a high crest is caused by an upward dysfunction of the joint when, actually, the high crest is caused by anterior dysfunction and concurrent apparent lengthening of the leg. This maneuver could serve to open the joint slightly at which time the taut sacroiliac ligaments would rebound the innominate into its proper position, usually with a disconcerting thud. If this method of mobilization in the wrong direction is continued for any period of time, one of two things will happen: the joint will be jammed much more tightly, or it will become unstable requiring frequent adjustment usually at great cost and inconvenience to the patient.'