Dealing with morning sickness

I’m currently 7 weeks pregnant with my second child, but I’m severely suffering with all day sickness, not constantly being sick but dry heaving at everything!

I am exhausted, I have. 4 year old girl and I feel like I’m neglecting her, because I feel so ill!

My mum keeps telling me ‘ oh get over it’ and other pointless shit such as ‘you’re not the only pregnant women in the world you know’ So she’s not understanding why I need a few hours to myself.

The doctor gave me Cyclizine which I’m meant to take three times a day, but I’m finding the effect of these is starting to wear off, and I’m needing to take more than 3 a day, also I’m feeling very weak and faint in between doses

I’m so fed up it’s unreal, I’ve literally tried everything now, sea bands, ginger, etc nothing is working!

If anyone has any suggestions please let me know, because I’m quite quickly becoming very depressed