Hello. welcome to HCM.
This fall with the formation of a knot/ bruise
on the left side of abdomen can be a spleinic hematoma
, which is possibly the most serious traumatic condition in that area. To be on the safer side, please go in for an ultrasound
, which will reveal if there is any such problem. In case it is just a skin and subcutis deep hematoma, please use thrombophob ointment and oral analgesics if required.