I got the injection(my first ever) done on wednesday and have been lying in bed since then. I already had the symptoms before so restylane is not to blame. Because of the cold I am so afraid that my body will perceive the filler as an antibody and reject it. Is it possible? Another question: When will the stiffness in my lips subside? They still hurt and feel so hard. I can barely smile. Thank you so much. Andrea