False Negatives???

Hi guys! I'll be 18 on March 16 and my boyfriend will be 20 in July. We have been TTC since last month (December, 2015) just before Christmas. I stopped taking my birth control pill in early December and obviously we haven't been using any type of birth control since. We've been having sex at least 3 or 4 times a week. I was kind of devastated when I got my period on January 6th. It lasted about 4 days and was about a medium flow every day. My boyfriend and I had been having sex consistently even on my period. Lately I've been having lots of pregnancy symptoms including:

~Sore nipples (not the whole breast, just the nipples which i thought was a little weird)

~Milk cravings (I don't enjoy the taste and I'm slightly lactose intolerant so I don't drink it often)

~The way certain foods smell make me sick to my stomach

~Sleeping A LOT (about 11-14 hours a night and even taking naps during the day)

~Eating a lot

~Increased urination

~Bloating

~Constipation

~Very gasy

~Headaches (something I don't get often and now I get them a lot)

~Very moody

~Crying easily about random things

I took several pregnancy tests (a few days apart each time) and all of them came back negative :( Could they be false negatives? Am I testing to early? I really feel like I'm pregnant. My next period is due Feb. 4th. Should I just wait until after then to test again?

Also I have a gyno appointment on this coming Tuesday. Could they tell me if I'm pregnant even if I'm only a couple days along?

Sorry its so long, I'm new to this whole TTC thing. Baby dust to all of you :)