Hi
I am ~4 weeks pregnant with 2 m/c before and I have also been prescribed with CLEXANE, a type of heparin injection which I take daily on my arms. I was warned by my doctor abt the bruises and pain that may appear due to the kind of injection this is i.e. thin, sharp and should go under skin. Its been 5 days since I am taking them and I actually have 1 serious bruise on my right arm with others just slight marks and lumps. I've checked this with my doctor and she said thats common. So I won't worry abt it if I were you :-) And yes, please try various areas rather than the same spot everyday like twk187 suggested above.
-Tuki
So you are injecting the same spot over and over again? Sounds like the injection sight is irritated. Maybe you should try a new area?