pregnancy scare

Im posting anon because i almost feel embarrassed about this. Anyway iv been on the depo for a few years now.. but this past 3 months i havent spotted AT ALL and i normally do at least a week or two before my shot is due... my shot is due in 3 days. And iv also had cramping throughout the whole cycle randomly, bloating( well i just feel like a whale), nausea and iv nearly thrown up 3 times, serious appetite, and my boobs HURT. Like punch my fiance in the face -dont touch me -hurt loll and moody as hell. Its making me super nervous because iv never had all these symptoms for a whole shot cycle, let alone the no spotting. I should also ad iv been having kidney and bladder infections so the last 4 months i was taking antibiotics here and there, but iv never had an issue with them interfering with my depo before. I cant remember if i spotted after taking any of them 🙁im having planned parenthood do a pregnancy test when i go in Monday.