what are the sideffects of gym and antibiotics

hi! all,

i was diagnised as a pcod patient,since the time of my 5yrs marriage,
so have been on and off medication for the same.
recently i felt the symptoms of pregnancy like a lot of vomitting sensation but no vomit,so went and did a pregnancy test,i did not pay much attention,i thought as usual i am not pregnant and my periods have been delayed since i have pcod,since the best method of getting rid of pcod is good exercise,i started of with gym,at the same time i took antibiotics for some throat infection,immediately i felt v.sick,next day i started bleeding,somehow since i was feeling v.much like vomitting i went and
re-checked my pregnancy result which i had done earlier i was shocked to see that it showed that i was pregnant,but when i did the pregnancy test when i had just started to bleed it showed negative,i thought i am having a miscarriage because i had stomach pain and bleeding for 3 full days,there were clots also,but not like a miscarriage clots or bleeding so my question now is
what should i probably do now?did i have a miscarriage?
is it possible that i have not had a complete miscarriage?
i have not been to the gym since then is it 1 reason why i have had bleeding like this or is it the antibiotics? should i continue to go the gym now?

annar