Could I be pregnant?!

shelby
Me and my boyfriend took a week long vacation to Florida around Christmas and we just let loose. I stopped taking my birth control about 4 months ago and of course we had sex a lot (like 5 times a day) and he came in me every time. I have just really nervous because the chance of me being pregnant is very highly. My period is supposed to start in 2 days, but I took a pregnancy rest last night and it was negative. Should I go to the doctor to know for sure? HELPP?!?!