fleas 🥴

my dog goes outside to use the bathroom (obviously) and get out of the house and run around. probably about a month ago she ended up getting fleas and brought them in and now our cat also has them. i bought them both flea collars and medication that they were given saturday at about 10 pm then we kept them away from each other for 24 hours as instructed. the next day i put flea killer on the carpet, mattress, couches, EVERYWHERE and then i vacuumed really well, i also washed all of our bedding and ran the dryer twice because i heard heat helps kill them but idk. i’m almost 30 weeks pregnant and i get bit nearly every night and i’m so tired of it. i also feel bad for my dog and my cat because i can tell they’re miserable. my cat is starting to lose hair on his neck and shoulder blades from scratching and my dog is non stop biting at herself. i’m due in december and i don’t want my baby getting bit because if IM this miserable i can’t imagine how he would feel. what else can i do to get rid of them? any home remedies? cheap ways to do it?