Newly TTC - advice appreciated ☺️

MJ
Hi everyone!
Hubby and I have decided to start TTC. I am 25 and he is 28. I haven't used any oral or chemical birth control for 3 years (using condoms only) and have tracked my cyle for over 2 years just to keep an eye on when my period is due. 
I have of course done heaps of research but after first hand advice of what to do/not to do. 
Any opinions on things like taking paracetamol? I suffer terrible migraines and often take Imigran/Mercyndol but would obviously would not touch them while pregnant. 
Any pre natal vitamins you would suggest?
Thanks in advance x