2 craft meet on ridge and disappear

I was i was traveling home form an evening out I saw a huge cigar shaped graft emitting a sort of rainbow colored light arrangement. the craft hoovered aprox: 30ft off the ground. as i approached in my vehicle it seemed to notice my presence and shined a bright blueish green light directly at me. It didnt seem threatened by my presence however it was aware of me being there. after a few moments maybe 3-5 minutes the craft shot up to a few hundred feet and took off in a northeasterly direction. no sound was emitted as it propelled its self forward. a low audible buzz or humming sound was present while it was hoovering in front of me. As i looked back down a second craft seemed to appear out of nowhere. it slow crept up the hill to the same spot the previous craft had been spotted. it didnt seem to notice me however my fiancé and vehicle appeared to capture its interest. being as she is pregnant with our second child i was very concerned. the craft shown a blueish green light in what seemed to be a sort of quadrant scanning sequence carefully examining the vehicle and its occupant. afraid to make any harsh movements i stood still and avoid any movement. after aprox: 10 minutes the craft shot up in similar fashion to the first and and disappeared in the same direction as the first craft. the rate of speed the craft leapt forward with was unimaginable. they were gone so quickly that the speeds weren't possible to estimate. once the craft were gone we began out travel back to our home and realized that at least 2 hours had passed between leaving our previous destination and our home. once home we quickly showered due to a worry of possible contamination and my fiancé being pregnant. i havent felt right since the incident.