I've been feeling kind of lousy lately. I went to the doc and he thinks allergies are just starting to really get to me. I've been short of breath more often and really quite tight in the chest and sometimes feel like my pulse/ox is dropping a few points when I walk up stairs sometimes or around campus. Is there any way I could monitor my O2 level mysel without having them do it in the hospital or at the docs office? Now is a really bad time for me to go in, especially just to see what my pulse/ox is. Plus, if I go into the hospital to get monitored, I won't be doing the things that get me out of breath like walking around school and working and things like that. Any suggestions?