Just got married and worried I'm already pregnant

Just got married a few weeks ago, I started the pill a few weeks before I got married and we've been also using condoms.
There's been one or two times we didn't use a condom (he didn't cum inside me) and I've missed a pill (took it again a few hours later). 
I've had withdrawal bleeding during the times I'm on the sugar pills but lately my breasts been sore for about a week now, major food cravings, nausea, mood swings and feeling bloated. 
I took a test and it was negative but it may be too early since my next expected withdrawal bleed isn't until two weeks. 
Please help! Thank you!