past perfect simple/continuous

Prosze o sprawdzenie:)
Mam takie polecenie, wybierz poprawną formę czasu past perfect simple, or continuos.Czasami oba są możliwe)

1.Last night I fainted at the concert.I had felt/had been feeling dizzy for a few minutes and then suddenly everything went black.(Wybrałem past perfect continuous)
2.I started using homoepathic medicine when I had a throat infection.My GP had treated/had been treating me for flu and I didn't feel any better.(Wybrałem obie odpowiedzi)

>1.Last night I fainted at the concert.I had felt/had been feeling
>dizzy for a few minutes and then suddenly everything went
>black.(Wybrałem past perfect continuous)
obie sa okay

>2.I started using homoepathic medicine when I had a throat
>infection.My GP had treated/had been treating me for flu and I didn't
>feel any better.(Wybrałem obie odpowiedzi)
past perfecto continuos