Can anyone advise me what else to try?

Looked after friends cat for 2 weeks 6 weeks ago. Didn't realize the cat must have had fleas until about 1 week ago because i was getting bit and then found a few in my house. Me and my partner have cleaned, hoovered, moved all furniture and washed all bedding, cushions etc. Yesterday we then bought foggers for every room and set them off and then came home and vacuumed everywhere again. I noticed 1 new bite this morning and then saw an adult flea on my bed. I am getting worried now because i have 2 very young girls and am due a baby in 4 weeks. What else can i try? They are driving me mad. Please can anyone advise me what im doing wrong or what else to try? Thanks in advance