Please help me with the grammar in these sentences?

Could you please help me correct these grammatically?

1 I have pressure in the temples that feels like someone is tightening a vice on them and my blood pressure is high but not too high to worry about/that you need to worry about/so as to worry about.
2 I'll watch the video that has a better ranking /that rated better
3 Remind me never to drink when I already need to go to the bathroom badly. (joke)
4 I'll let you pick whichever days you need.
5 Picking up the bag is what strained my back.

Thank you