Second month trying to conceive

So me and my hubby are trying to conceive. This is our second month, I don't drink enough water so this time I'm trying to drink as much water as I can and I've started taking prenatal vitamins, and vitamin E and Zinc. We started today because my period was ending and it was just a light spotting. Planning on trying to have sex every night if not more than once (we enjoy doing it so might as well.) and I'm trying the hips tiled and laying still after. Any other advise for a 21 year old wanna be mother?! 
Oh I'm 104lbs and 5'5