OMG BEST SEX ON A GOLF COURSE - BUT HELP

Marie
LADDIEEESSSS!!! I went to a dierks bentley concert and met this hella cute guy...we danced a lot that night and then when he had to leave he got my number and said we should meet up later...so my friends and i left and went to get food and he picked me up from where we went to eat and we went to a golf course at like 12:30am and did it for so long and it was the best sex i have ever had!!! and then he left the next day (yesterday, so same day as sex tho) for london and we are snapchatting and planning the next time we are going to see each other omg!!! but now, 2 days after the concert, 1 day after sex i feel so sick like i'm nauseous, headache, a 99 temp. we used a condom and he did cum inside me tho...if i were to be pregnant would i feel the symptoms so soon?