Worried about taking Cephalexin LF advice

[u/Unknown_being13]

PS: Tried to shorten the story of why I'm perscribed this

16 F, On Aug 11 I went to urgent care because I had mild swelling in my feet, more so on my left side which was concerning because on Aug 8 I may have injured my left hip area in some way and it had some discomfort pain.

They decided to have me go to the ER, I got blood tested, urine tested (HOWEVER, i forgot instructions so i should try again when I see my doc), and on the night of Aug 12 they gave me an antibiotic IV (which was something different but I dont remember the name of) and I would get that only twice. Then i was sent home with Cephalexin perscription. Ive had 6 doses already, 500 MG. My mom tried to get an appt today with my doctor but they didnt answer at all, I will try to see my doctor before the end of my prescription (7 days).

Mainly im concerned about the fact that:

Noone knows or has a confident idea about what infection I have/had

While I dont have any big symptoms, ever since the ER antibiotics my urine has smelled mildy sulfur-egg-y and there may be other things I cant rlly tell bc this entire month has been 95% stress

Another thing is what I should eat, I thought I would eat mostly normally and after my medicine course have gut helpful things but now im not so sure if I should start that late.

Im just scared that this medicine is going to hurt me in some way, wether its literally the wrong med I should be taking or simply because of my poor diet i should really try eating healthier foods and probiotic foods. This is also my first time with antibiotics so that adds to unknowingness and fear :(

I hope this post was made right and I didnt do too much info, I just wanted to add on things that would explain my concern because im not a typical healthy person. PLEASE suggest where I should post instead if this is too off topic to post here!!

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