Okay so this might just be a little confusing I am on the implant like this November it'll be time for a new one in 2015 I rarely had cycles in 2016 I have a 9-15 day cycle ever 7 weeks so I've only had like 2 and they both started around the same date. I'm late. By a few days. I've had little to no appetite. Nausea even when I haven't ate in like almost 2 days. Weird sleeping pattern. Sensitive smell. And slight cramping/back aches. And slightly more emotional than normal. It's been 5 weeks since I've had sex. And I know birth control is not always 100% but do you think I may actually be...or maybe it's stress related? This has been more apparent in the last 2 weeks since I've been home from college.