Ok so here goes. About a month ago I had an upper respiratory infection and was on a string of 5 day antibiotics called Zithromax z pack. In that time period I missed two pills and had unprotected sex all 5 days I was on the antibiotic. A week after finishing the antibiotics I started bleeding (about 2 weeks early than my expected period) after that I started to feel very tired, breast were sore, nauseated, etc. Well when it was time for my actually period to come I didn't even really have a period it was more like spotting. I chalked this up as not having once due to having breathrough bleeding while on the antibiotics. The classic pregnancy symptoms seemed to go away but now as of two days ago they are back, i felt so nauseated last night at the smell of BBQ it wasn't even funny. My cervix also feels very heavy like i should be on my period but i'm not. I am just wondering what are the chances of me being pregnant and not knowing it right now since I have had bleeding. I know that its probably pretty unlikely but for some reason I cant shake the thought out of my head or all these "symptoms" that keep popping up. I just wanted some advice before i spent 10 bucks on a test. Thanks guys!