Can expectant mother ride a motorbike? As a pillion? Even for short distances?

I've rode as a pillion for many years since my 2nd to 4th pregnancy (from early to late trimester) & rode to Msia. I even slept while riding which is of course dangerous. I will not recommend though. The road users nowadays are much more dangerous than my time even when you're careful enough. And you're still in your early stage of pregnancy which is considered as the 'fragile period' so do refrain from riding.