@m in israel- thank you for answering all my questions so clearly!
I am going to put in a call to my Rav (or really his secretary).
Also, I’m not sure if it’s in my best interest for my parents to know. They will get very nervous and don’t really know how to deal with these types of situations. It actually might be smarter of me to keep it quiet for as long as possible because there is still that little hope that this will blow over in a week or two.
I did speak to my Dr but I didn’t really tell him that I’m nervous about fasting tisha baav. I just told him in general what happened to me the last fast. I guess I should give him a call back and specify that I’m apprehensive about the upcoming fast.
Thank you everyone for being so supportive!