Misery

I know that pregnancy is tough. But I didn't know it's so damn tough.
Perhaps it's near to the end of my last trimester, I've another 6 wks to go if things are going as planned, I'm getting teary almost everyday.
It's not funny to get sick during pregnancy and esp. in the last trimester. Anything could cause complications to the pregnancy & the baby. I'm just so tired now.
Now that one problem comes after another, I'm losing my patience, kept asking myself why me, been thinking too much... I'm afraid I'll be passing all the anxiety bug & negative energy to my loved ones around me, even though things are not as serious.
Then, they may lose patience with me. They may be mentally drained with all my tantrums. They may not be bothered with me anymore...
Slowly, loneliness creeps in, befriending me.
I'm just afraid I'll lose this battle.
How can I be strong again like I used to? Like I'm at work?
Tell me.