To be annoyed at being everyone's pregnant taxi service?

[MummyG31]

So since becoming pregnant I seem to have become everyone's taxi. I don't mind being designated driver when I'm going somewhere too but my family etc (who live nearby to me and husband) are constantly calling me and asking me for lifts. If I'm not doing anything else I have said yes but it's getting on my nerves now. When I try to decline I get told things like "You're not asked for much" and "You've got to get used to driving around a lot when baby comes". They've even started offering my services to outside parties!!!
One thing I feel bad about being annoyed over is driving to pick my grandparents up and then dropping them off later so my Nan can have a drink. She deserves it because she's a saint but I wonder why the rest of my family can't do this every now and again?! Anyway... Is this just my lot now that I'm pregnant and I've got to get over it or am I right to start digging my heels in?

@DuckbilledSplatterPuff thanks so much for taking the time to write all that! I really appreciate the support, it does make me feel like less of a cow and that I am right to be irritated by this!! The Uber screenshot idea is absolutely hilarious, love it!

How far along are you?

I had big babies so I was unable to drive past about 36 weeks during my second pregnancy. I could not turn the steering wheel due to my bump being in the way. They might try to discount excuses such as nausea or sore hips by saying it is just around the corner, you will only be driving for ten minutes etc. If you can say that you are physically unable to do it they can not argue.

Along with them blithely assuming you're physically able to drive, they are arranging your time for you and presumably stomping all over any plans you may have had.

I'd be stopping that right now.

They’re probably the kind that will come around when op has the baby and expect her to wait on them hand and foot!

Stand up for you op and remember as is often said in mumsnet, no
Is a complete sentence.

Ha Ha Mummy G, thank you.. I've been where you are now so your post kind of got my goat a bit.. The youngest in a large extended family. My relatives thought we were an airport hotel, a resturant, an airport transfer and a meet and greet service.
I found that having children clarified my priorities wonderfully. My relatives were not pleased!. Good!
And good luck with saying no, non, nay, noooo way Jose to all of your bunch.

Say you are feeling unwell as you are pregnant.