Symptoms

Ok ladies I need some advise. My husband and I were very sexual this month and ever since ovulation period my breasts have been sore and swollen.i get mild pain in my abdomen feel sleepy. I took a test yesterday 5 days before my period is due and mind you it was an 88 cents test from Walmart I took in the afternoon I got a bfn. What are the chances of getting a bfp this month? Should I buy a different test?