Started injections and nervous about the side effects

Hi everyone. Started my injections for my Ivf cycle yesterday(Friday). Doing 450 gonel f and 2 menapur. Felt fine after the first night. Tonight I'm feeling achy in my legs. And achy in the abdominal area as well. I'm not sure if possibly I'm also having gas issues because my stomach is gurgling.  I'm also constipated because i haven't gone today. Anyone have these issues? It's really starting to freak me out.