So I was 3 weeks late getting my birth control shot, finally was able to get it April 10. My fiancée got back home from being out of town on work on the 14, we had sex on the 14 and the 15. Last week I noticed tender breast, sensitive nipples, peeing about 3 times more than I normally do, then about 3 days ago I noticed I'm lactating. I haven't breastfed in about 8 months. I've taken 2 test but they've both come back negative.