My (subtotal) Hysterectomy 14 Months Ago Has Been Positively Life-changing,

My (subtotal) hysterectomy 14 months ago has been positively life-changing, but my immune system has been a nightmare ever since... I seem to catch every cold and flu virus going. Could the two be connected? (Additional info: I broke two ribs last February but recovered well from that, and the colds and flus came before and after that so I'm not sure it's connected. Ditto family bereavement last April which affected me badly emotionally.)