Am I or not?

So I am currently on NuvaRing. No other methods of birth control besides that. I have been married over a year and I'm almost 25 years old so it's OKAY if I am...usually when I take out my ring it takes about 2-4 days for me to start. Today marks a week since I've taken it out and no sign of a period or anything. No cramps , nothing. I've taken 2 tests now and both came out negative. And yes I did them at different times of the day Incase my HCG levels are higher at different times of the day. I've had breast pain but that's not really abnormal for me. I have pain when I drink caffeine and when I'm ovulating and also when I'm about to start so that's not a good indicator. I am living proof that BC isn't 100% effective because my mom was on it when she conceived me. I've had a huge appetite and I've been super moody. Almost bipolar... But I assumed it was because of PMS ... Could I be pregnant and just not far enough to along for a negative or what? I would love for a positive to come up on that little screen... But I know my husband isn't ready. Advice?