Redness at injection site

Hello! I just started Saxenda on Feb 14. At first I didn’t have any problems and then after a couple of weeks I noticed some bruising at the site at the 1.2 dose. After a few days at 1.2 I noticed some redness and it was a little itchy and swollen. The day I took 1.8 I became violently sick. I’m pretty sure I caught the stomach bug as I haven’t had problems since. But every injection since then has been red, raised and itchy. Nothing major, just annoying. Today I had some left in one pen so I used the rest of that (0.6) and then 1.2 from a new pen and both spots are red, raised and itchy. Is this common? I don’t go back to the dr for my follow up until next week. Thanks!