Feeling sleep deprived

I took Friday off because I felt I needed it, I didn't sleep very well at all Thursday night after work because I was feeling stressed about work not giving me priority to change two of my night shifts to Day shifts instead telling me they had been filled. I asked 3 weeks ago to change to day because I know as I get further into my pregnancy late night aren't a healthy thing. My store manager (Male) does not feel pregnant women have any extra priorities and made it clear there not going to do me any favours. So yep I am annoyed as an employee and as a women...

I had to get a medical certificate for Friday so that they pay me as I want to use my accrued sick time which I'm entitled to do. But I couldn't get into see my GP then so had to go today, no worries at all she backdated it for me so I'm covered. Instead of my coming back to see her next Monday she did my next due antenatal checkup today; blood pressure,weight,referral for my 18wk scan and used a Doppler thingy to see if we could hear bubs heartbeat as you can from 15 weeks. Its not the greatest technology certainly nothing like an ultrasound, sounded like bad feedback noise but I was able to hear the heartbeat for a brief moment before bub obviously moved out of range, there were some sudden loud noises amongst the static that my GP said were fetal movements..pretty cool anyway

Was so tired today that I slept the majority of it away, couldn't clear my sleepy heavy head and I felt like I had a hangover headache u know not throbbing just dense. Starting to feel better now but not looking forward to going to work tomorrow. What are my options for the next 6 months right now trying to figure that all out.