very sleepy after running!

brendas026

I've been running for two months now, but used to run all the time before I got pregnant. For the past week all I want to do is sleep after im done, I dont understand, I cant even function during the day. I started running 1hr 30min. after I would get up around 3pm
(I know I live in Vegas) did my running and felt very energized and got on with if you can called day until I went to sleep around 7am. But last week I decided to change my schedule on my 2 days off from exercise. So now I get up at 7am and do my running but afterwards im super sleepy like I can sleep for 14hrs during the day! what happened! Do I need to eat something before running? I also gave my body plenty of hours to adjust. I would never eat anything before running, maybe its catching up with me. I dont know.
Im a stay at home mom, so I should have plenty of rest. Im spending very little time with my family because of all the sleeping! what can I do? I googled but nothing is conclusive.