Lovenox is a blood thinner, burns like hell, and leaves terrible bruising. However, after 7 IVF cycles I have learned some tricks to help with the pain and bruises. Here they are, I hope they help you, too. Note: This is not for training purposes and each patient has their own dosage, specific doctor's orders and techniques. This was done to show a friend how I personally do my own shots and I am not a doctor, just an IVF patient. Please direct all questions to your own RE.