early pregnancy symptoms or really bad pms

i have what feels like pmsx10 right now. my period is 3-5 days away and i have felt like complete crap for a week. i have been exhausted after 7-8 hours of sleep. i have been naseaus off and on all day for 5 days. i have had weird feelings in my stomach and sudden urges to go to the bathroom. ive also had slight cramps and heartburn. I was on an antibiotic for a few weeks up until a week ago. my husband and I were careful. but i have felt like vomiting all day and really I just feel off. are these early pregnancy symptoms,or just really bad pms?