Confusion

Laren

ladies i need help! I took 2 pregnancy tests this morning and they were very faintly positive then i took one tonight about 12 hours later and it was negative but it was also right after i drank a lot of water! my boobs hurt and are so big, my stomach feels weird, i feel very nauseous and light headed especially when im working and at night! my period was supposed to start the 17th!