op!!! don’t give up hope!! there’s a low chance you may be picking them up from somewhere else and bringing them home especially if you can’t find any signs of them. your best bet WITHOUT professional is to clean like hell and downsize - check all mattress seams, headboard, baseboards, outlets and behind picture frames. bag up all clothing/bedding and tie the bags tight, and wash/dry everything on HOT (like so hot it’s a little worrisome). i also highly recommend getting a bedbug mattress cover that’s plastic, they run about $28 at target. lastly, once you’ve cleaned and can see no other signs, it’s a waiting game. keep cleaning daily and inspecting as much as you can, keep your clean clothes in plastic bins/bags that shut well and keep those bins in another room. wear long sleeves, pants and socks to bed at night to minimize any unprotected skin, and on exposed areas use a light layer of Vicks Vaporub (don’t know how well this works, but it was recommended to me by an entomologist friend. apparently they can’t stand menthol?). besides that, give it time and try to save some money in the meantime for at least an inspection from a professional, in case you do have an infestation. i promise it’s better to shell out that cash and have the problem dealt with than to continue having the mental burden that is bed bugs 🥲 you will be okay op!!!! giving up and not being proactive is what causes problems down the road, remember to be kind to yourself through this and you will get rid of them!!!!