What do i do??

So been trying to conceive for 18 months now. My cycle is an has always been every 28 days. I could guess the signs on day 27.

But the last 6 months have been really irregular as much as 33 days or little as 24... added with nausea, craps, light bleeding. Ive taken a test on my last 2 due to lateness.... after 2 negatives i feeling very dishartened... dont think i want to see another negative test...

However day 34 of this cycle an still nothing over than very light pink blood for an hour on day 27. Quite sicky. Bloated. Hungry an really tired... and every morning for the past week ive been awake 3am-half 5 ish feeling rotten. But also feel like ive poss got a kidney infection so it could be that.

Do i do a test or wait?