4 weeks left and my house has fleas!!!

Victoria
I am stressing out and my partner seems like it's nothing and they will eventually go away. We have used spot on and hoovering like mad but he doesn't empty the hoover after. I'm still working for 2 days and super tired when I get home. Going to move everything off the floor and use flea spray on the home tomorrow morning then leave for work for the day. 
Aagghhh! So annoying! One jumped on me as I walked to the bathroom! Fk! And we have visitors next Wednesday! As if I can let them come round without letting them know they may not want to stay in the house!
Worried about using the spray stuff while pregnant in case I breathe any in and it affects the baby, any advice? I really need to go hardcore on these fleas because we are very out of time! 😭😭😭😭😭😭😭😭