So I'm scared I might be pregnant. I am on birth control I have the nexplanon implant. I got it Nov of 2016. The first 2 months on it my periods came two days late. The 3rd month January I didn't get my period at all and I took a pregnancy on Feb 4th and I was 4 days late and they both came tested negative. I've been experiencing sore breast and excessive discharge for a few weeks. I'm supposed to get my next period on March 4th. I'm worried I might be pregnant. I will take another test soon though, just want opinions