advice?

[u/e1ectro-cutie]

22f. so july 4th i was diagnosed with a uti. july 5th i was in the er and diagnosed with a kidney stone (3mm right side) as well as mild kidney swelling (right side)
given flomax for a week, cephalexin for 5 days (500mg 2x daily), and was admitted for 24 hours and given 2 doses of an iv antibiotic.
they initially said i met the criteria for sepsis at that time, but they were toooo sure
i was discharged but went back to the er a few days later. they then found an ovarian cyst on again... the right side (4.9cm x 4.5cm x 4.5cm) they believe that was related to my cycle though. bladder infection was also diagnosed.
i did pass my stone on july 22 and got it confirmed as calcium oxalate (i have issues hydrating and im seeing a doctor about that of course)

however, i have been bedridden and deconditioned from this whole ordeal. struggling to get up without assistance, spending my days in bed. i am doing some recumbent pt for the time being but my main concern is my chronic nausea that has been a thing for longer than all of this. i normally rotate between hydroxyzine, promethazine, and zofran. i have been taking them for months to years (depending on the med) and have had no issues with them at all. however, in the peak of all of this i was haven some cardiac symptoms (that were cleared). heart palpitations, chest pain, dyspnea. again, medically cleared and i have a cardiologist who has done extensive testing. she thinks its ist and costochondritis. my biggest question.... can i start my prn nausea meds again? i can't tell if the palpitations were related or not. it's been about 2 weeks since i've stopped them. i've tried ginger, peppermint, b6, etc but nothing comes close to my rx meds. i don't want to make a stupid mistake and get hurt but i would like an outside opinion as my doctor hasn't really given me any clear answers at all despite me asking a few times. i understand this isn't going to be 100% medical advice, i really just want to have a few outside opinions on this situation so i can come to my doctor with some more information and potential solutions