Scared

Tre`nay
Well I need advice I hade unprotected sex but like we didn't really do anything he was to small and the worst part about it I did it on the day before My ovulation and I'm stressed by the way he didn't even cum but I'm scared if he did precum inside me but he said he didn't he really couldnt even get it really in but I have been really tired lately lose of appetite really bad headaches and a little light headed and bloating can I be pregnant or am I just stressed also 6 days after I hade intercourse I took a test but it was negative so can some one help me out please