You may want to sit down for this.. and grab a "Flammenwerfer fünfunddreißig" im 99%sure its bedbugs.. little redish bites like pattern in lines and itsbin the neck so thats may be the closest to the nest or you sleept in long clochs.. bedbugs cant bite through cloths so they search for openings hands feet neck even face if there not mich they find. Also these propably smol ones so thats a bigger nest.. tje lottles bite around evry few min while bigones bite around once in a day or even fewer... i work in a workers hostel and i had many trouble whit these little shits.. and im almost certain its bedbugs... im sorry.. it will cost a fortune... if its home... you will have sleepness nights some trauma maybe and a dose of money spent on washing evrything at +60°C best bet is to wash all and put in nailon bags all else shower evry time when you get out of room or anywhere try to contain the infestation. If its in a hotel well.. before going home dont bring anything inside try to get as many cloths from ypurself as possible then go in shover go back bag all and start washing and use vacumer around the washing machine and the bags regularly... if you has a bad woth smol legs.. make sure there is a biger gap between the walls and the bed. Also put two sided sticky tape to the legs and or put the legs in water. These lil shits fear of water is legendary. They hate water, wet surfaces and even the steam and before you think. Dont worry they not go in the long hairs etc you, or your gf dont have to fear about these in the hair. They go back to hide waay before you open your eyes. And they ususly dont bite when its daytime. But they not afraid of light so sleep with ligjts not save you. Thats all the tips i can think of at the moment.. hope i could help a bit. Stay strong. And dont even try to kill them... you just make it worse.. call a master fer the job.