Hi!

After 1ha swimming I used sauna and steam room for about 10min and after shower I also used sunbed for 10min and as I waited for lift to go back to my apartment which is in the same building where gym&pool is I was starting to feel ill and just wanted to sit down but managed to get in the lift, I remember 3rd floor and that it is almost my turn to get off soon when I woke up on the floor surrounded by many people holding my head, I have never fainted in my entire life and was so shocked. I felt so ill about 30min after and felt shivery and weak with dry mouth, I drank water and ate melon and now slowly feeling better.
Was it too much for my body - sauna/steam and sunbed which was so hot and made me feel so ill that I fainted?
Should I avoid doing this combination?
How long time is advisable in sauna?
Kind regards.