How can I get pregnant

Me and my love have been trying for 2 months now to get me pragnet
but yet nothing

we never use a condom or anything

i go my . On the 11 of august I was vary light and lasted one day then stoped about 2 days latter it started up agin but there was only spoting
so I took a test but it was -
the only thing is I still have not been feeling well and I have been eating way more lattly

should I take another test

if im not pragnet can anyone zgive me tips on how I can? :)