Can't get to the gym

Denise • Have a energetic, smart and sweet 2-1/2 year old that's so much fun! Been married for 11 years. On my 3rd pregnancy.
I'm struggling to get to the gym. I was going regularly 4-5 days a week until about 6 weeks when nausea hit. I'm 10 weeks now and haven't gone the past month. I miss it. But I can't find the motivation to get there. 
How do you ladies do it?