Tender boobs

Ok sooo my boyfriend and I have been having a lot more sex recently and he's been cumin in me more frequently lately. On Friday after a bbq i woke up from my sleep and had to throw up like immediately then my boobs have been very tender for like the past week. The other day he asked "are you bloated or pregnant?" My period isnt for another 10 days... could i be pregnant? What are the earliest signs of pregnancy you experienced? Should i wait or take a test?