when to test

Carly

Hi I've been ttc since my miscarriage in August last year. we've had no luck so far after a chemical pregnancy in November. I've been tracking it this month as much as I can. i think I ovalted around the 14th- 15th of April so I should be about 6-7 days dpo. yesterday I had very light pink (pastle pink) discharge. my period isn't due til 1st of May. I have had slight cramps this morning and feeling a little sick. I really don't want to get my hopes up as I haven't had much luck in the last 9months. when should test to be sure? I go away on holiday on the 28th so I've packed a test just in case. thank you in advance xx